Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
sach tu » sach thu, cach tu, sach uu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ty » sach y, sach thu, xach tay
cam luc » cam xuc, cau luc
hanh di » hanh vi, hanh de, hang di
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
cua te » cua tu

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

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