Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
ban hanh » ban hang
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
mo thuc » mot thuc, do thuc, co thuc
cong xa » cong xay, cong xua, cong ha
tu cong » thu cong, te cong, tai cong
qua mo » qua mot, qua co, quan mot

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu cong xa hoi. hieu qua mo thuc ((ban hanh) or (dan thanh)) ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu cong xa hoi. hieu qua mo thuc ((ban hanh) OR (dan thanh)) ((vai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu cong xa hoi. hieu qua mo thuc ((ban hanh) or (dan thanh)) ((vai cua) or (lai cua)) tre*.