Perhaps you should try some spelling variations:
hanh de » hanh ve, hanh kem
sach tu » sach thu, sach ty, sach uu
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
cao tu » cao thu, co tu, cao su
tu van » tu va
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 tu van ((hanh de) or (hanh vi)) cuu tre~.
• 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 tu van ((hanh de) OR (hanh vi)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) nang xa hoi. hieu va cao tu van ((hanh de) or (hanh vi)) cuu tre*.