Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau thuc » cuu thuc, can thuc, cau phuc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

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: tu sach v nang xa hoi. ((hieu ve) OR (hieu va)) ((cau thuc) OR (cau truc)) va hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. ((hieu ve) or (hieu va)) ((cau thuc) OR (cau truc)) va hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. ((hieu ve) or (hieu va)) ((cau thuc) OR (cau truc)) va hanh vi cua triet*.