Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
cap nuoc » dat nuoc
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
nang ma » tang ma, sang ma, nang cao
cac xuc » cam xuc, cac nuoc, chat xuc
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
ve va » ve van, te va, ke va

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) or (te sach)) ky nang ma hoi. hieu van ((cac xuc) or (cap nuoc)) va thanh ve va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky nang ma hoi. hieu van ((cac xuc) OR (cap nuoc)) va thanh ve va triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky nang ma hoi. hieu van ((cac xuc) or (cap nuoc)) va thanh ve va triet*.