Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
lam thuc » lam thuoc, am thuc, nam thuc
hieu van » hieu va, thien van, lieu va
danh doi » danh di, dung doi, danh hoa
so sanh » do sanh
van lam » van nam
nang ma » tang ma, sang ma, nang cao
cua tuc » cua duc, cua thuoc, luat tuc
sanh y » sinh y, anh y, hanh y
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
cua tu » cua su, cua cu, cua te

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 y nang ma hoi. hieu van lam thuc vat ((danh doi) or (thanh doi)) ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y nang ma hoi. hieu van lam thuc vat ((danh doi) OR (thanh doi)) ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y nang ma hoi. hieu van lam thuc vat ((danh doi) or (thanh doi)) ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: so sanh y nang ma hoi. hieu van lam thuc vat ((danh doi) or (thanh doi)) ((cua tu) OR (cua tuc))*.