Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cua tre » cua te, cuu tre, cua triet
hanh va » hang va, hanh vi
xa hanh » xa thanh, xa khanh, va hanh
cao tuc » dao tuc, cao duc, cao suc
sach tu » sach thu, sach ty, sach uu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
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) or (cach tu)) nang xa hoi. hieu va cao tuc xa hanh va ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (cach tu)) nang xa hoi. hieu va cao tuc xa hanh va ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) nang xa hoi. hieu va cao tuc xa hanh va ((cua tre) or (cau tren))*.