Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
bao thuc » cao thuoc, am thuc, va thuc
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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 thi nang xa hoi. ((hieu va) or (hieu qua)) bao thuc va hanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi nang xa hoi. ((hieu va) OR (hieu qua)) bao thuc va hanh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach thi nang xa hoi. ((hieu va) or (hieu qua)) bao thuc va hanh va cuu tre*.