Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat truc » cau truc, chat xuc
dua tren » dung tren
hanh dai » hanh tai, hanh dao, vanh dai
thu sach » tu sach, thuat sach, thuoc sach
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. ((hieu ve) or (hieu va)) chat truc va hanh dai ((dua tren) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. ((hieu ve) OR (hieu va)) chat truc va hanh dai ((dua tren) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. ((hieu ve) or (hieu va)) chat truc va hanh dai ((dua tren) or (cua triet))*.