Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh hoi » hanh thoi, hanh noi, hanh hoa
hoi cua » hoi chuc
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tang ma » mang may, tang van
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
cua su » qua su

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 tu ((nang xa) or (tang ma)) hoi. hieu van cam tuc va hanh hoi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (tang ma)) hoi. hieu van cam tuc va hanh hoi cua su.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (tang ma)) hoi. hieu van cam tuc va hanh hoi cua su*.