Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
danh vi » hanh vi, dinh vi, danh di
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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 y ((nang ma) or (mang may)) hoi. hieu van cham ((xuc va) or (duc va)) danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang ma) OR (mang may)) hoi. hieu van cham ((xuc va) OR (duc va)) danh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang ma) or (mang may)) hoi. hieu van cham ((xuc va) or (duc va)) danh vi cua tu*.