Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
tang ma » mang may, tang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
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 y ((nang xa) or (tang ma)) hoi. hieu va cam xuc va hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (tang ma)) hoi. hieu va cam xuc va hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (tang ma)) hoi. hieu va cam xuc va hanh vi ((cua tre) or (cua te))*.