Perhaps you should try some spelling variations:
doanh thu » doanh tai
hieu van » hieu va, thien van, hieu ve
nam thuc » nam thuoc, am thuc, nam thu
va doanh » van doanh, vay doanh, va danh
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
thu cua » thuc cua, hu cua, tu cua
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
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 sach v nang ma hoi. ((hieu van) or (lieu va)) nam thuc va doanh thu cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach v nang ma hoi. ((hieu van) OR (lieu va)) nam thuc va doanh thu cua tu.
• Adding a wildcard symbol may retrieve word variants: so sach v nang ma hoi. ((hieu van) or (lieu va)) nam thuc va doanh thu cua tu*.