Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
so sach » so sanh, bo sach, co sach
sang ma » tang ma, nang ma, sang tao
tao dai » thoi dai
hieu ve » hieu va, hieu van
dao dai » dat dai, dao dan, do dai
thuc va » thuc vat, thuc day
cua te » cua tu
y sang » _ sang, duy sang
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa

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 sang ma hoi. hieu ve cac ((thuc va) or (thuc dan)) ((dao dai) or (tao dai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y sang ma hoi. hieu ve cac ((thuc va) OR (thuc dan)) ((dao dai) OR (tao dai)) cua te.
• Adding a wildcard symbol may retrieve word variants: so sach y sang ma hoi. hieu ve cac ((thuc va) or (thuc dan)) ((dao dai) or (tao dai)) cua te*.