Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, bo sach, co sach
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cua tre » cuu tre, cua triet, dua tren
sach tu » sach thu, cach tu, sach ty
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac
cua te » cua tu

You may be able to get more results by adjusting your search query.

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