Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hieu van » thien van, lieu va, hieu ve
danh lai » danh sai, gianh lai, dinh lam
sanh thu » sach thu, san thu, doanh thu
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
chuc va » thuc va, thuc vat
so sanh » do sanh
hieu va » lieu va, hieu qua
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
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: so sanh thu ((nang ma) or (tang ma)) hoi. ((hieu van) or (hieu va)) pham chuc va danh lai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh thu ((nang ma) OR (tang ma)) hoi. ((hieu van) OR (hieu va)) pham chuc va danh lai cua su.
• Adding a wildcard symbol may retrieve word variants: so sanh thu ((nang ma) or (tang ma)) hoi. ((hieu van) or (hieu va)) pham chuc va danh lai cua su*.