Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hoi chu » hoi chuc
hoi cau » hoc cau, hoa cau, hoi cac
va tinh » may tinh
cam tuc » cam xuc, cam tu, nam thuc
so sach » so sanh, bo sach, co sach
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
ma hoi » xa hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang ((ma hoi) or (mai hoi)). hieu van cam tuc va tinh ((hoi cau) or (hoi chu)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ((ma hoi) OR (mai hoi)). hieu van cam tuc va tinh ((hoi cau) OR (hoi chu)) treo.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ((ma hoi) or (mai hoi)). hieu van cam tuc va tinh ((hoi cau) or (hoi chu)) treo*.