Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
su triet » su viet, su tien, ve triet
cham tuc » nham thuc, tham thuc, cham soc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
te sach » toc sach
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
vi su » va su, ve su, ki su

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu ve) OR (lieu va)) ((cham tuc) OR (pham thuc)) va danh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. ((hieu ve) or (lieu va)) ((cham tuc) OR (pham thuc)) va danh vi su triet~".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. ((hieu ve) or (lieu va)) ((cham tuc) OR (pham thuc)) va danh vi su triet*.