Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
cac thuc » cach thuc, cac thu, can thuc
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
nang ma » sang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa

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 thieu ((nang xa) or (((nang ma) OR (tang ma)))) hoi. hieu va cac thuc dan hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu ((nang xa) OR (((nang ma) OR (tang ma)))) hoi. hieu va cac thuc dan hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu ((nang xa) or (((nang ma) OR (tang ma)))) hoi. hieu va cac thuc dan hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach thieu ((nang xa) or (((nang ma) OR (tang ma)))) hoi. hieu va cac thuc dan hanh vai cua tre*.