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