Perhaps you should try some spelling variations:
ve triet » va trien, su triet
danh gia » dan gian
chat huu » pham huu
sach ly » sach lo, sach ty, sach hay
hanh gi » hanh vi, hanh noi, hanh tai
huu van » cuu van, huu han, luu van
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
vu chat » va chat, ve chat, du chat
ma hoi » mai hoi, xa hoi, ma hoa

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 ly) or (sach y)) nang ma hoi. hieu vu chat huu van ((hanh gi) or (danh gia)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach y)) nang ma hoi. hieu vu chat huu van ((hanh gi) OR (danh gia)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach y)) nang ma hoi. hieu vu chat huu van ((hanh gi) or (danh gia)) ve triet*.