Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh anh » minh anh, anh anh, thanh anh
duc manh » suc manh, duc anh, duc minh
nhan duc » nhan duoc, nhan luc, phan duc
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, te sach
hieu ca » hieu cac, hieu cua, hieu xa
va nang » van nang, da nang, cam nang
v nang » vu nang, van nang, voi nang
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((v nang) OR (va nang)) xa hoi. ((hieu ca) or (hieu va)) nhan duc manh anh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((v nang) OR (va nang)) xa hoi. ((hieu ca) OR (hieu va)) nhan duc manh anh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((v nang) OR (va nang)) xa hoi. ((hieu ca) or (hieu va)) nhan duc manh anh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((v nang) OR (va nang)) xa hoi. ((hieu ca) or (hieu va)) nhan duc manh anh vi cua triet*.