Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cao tuc » dao tuc, cao duc, cao suc
cuu tre » cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
tuc va » thuc va, truc va, tuc xa
va cao » va cac, va co, va dao

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