Can land be "reclaimed from the sea" in the Maldive islands" to increase the land area there?

Apples and oranges: the Maldives are mid oceanic, steep volcanoes rising from the depths now ringed by coral reefs. In technical terms, the angle of repose for the slopes in the Maldives could never be reduced to an angle that would not slide away. ( As space does not permit the full discussion here please see the several explanations/images using the "LTGTFY" link below). In the Maldives there is no "land" (aka sea floor) to reclaim so the answer is, no. ( Caveat: Were there fill available, the atolls technically cold be back filled and raised above sea-level however it would destroy the fishery and coral nursery which would ultimately destroy the self renewing coral reef and the island would erode back below sea level.)

As you mentioned there is an exploration into creating floating islands but at present there remains a lot of evaluation to see if it is an economically and physically realistic project.

There is a great difference in setting which permits "land" to be successfully reclaimed elsewhere:

The Netherlands are on shallow flat continental shelves in a shallow sea. The sea is kept at bay by a dike system and a good 1/3 of that country is below sea level.

Dubai is likewise over a shallow, calm sea with ample fill available just a few kilometers away but the approach in Dubai is to fill the islands to above sea level with surplus aeolian sands--less stable than dredged sand, but acceptable.

Well, Holland reclaimed a lot of land from the sea--that's what all the dikes are for. If they can do it I guess the Maldives may be able to also.