Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
cuc ban » cua ban, cac ban, cuu ban
lam cuc » lam cua, lam duoc, pham cuc
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
nang xa » lang xa, nang ma, mang xa
va lam » van lam, va lap
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: tu sach tu ((nang xa) or (nang x)) hoi. hieu va lam cuc ban hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (nang x)) hoi. hieu va lam cuc ban hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (nang x)) hoi. hieu va lam cuc ban hanh vi ((cua tre) or (cua te))*.