Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
hoc sach » hoc sinh, hoc cac, hoc anh
thuc day » thuc dan, thuc vat
day hanh » day nhanh, day thanh, dao hanh
hieu ve » hieu va, hieu van
ve cach » va cach, ve cac, ve canh
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y ((nang x) or (nang cao)) hoi. hieu ve cach thuc day hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y ((nang x) OR (nang cao)) hoi. hieu ve cach thuc day hanh vi cua te*.