Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
vuc van » duc van, thuc van, chuc van
luc van » luoc van, luu van, duc van
cua tre » cuu tre, cua triet, dua tren
y lang » o lang, _ lang, tay lang
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: thu sach y lang xa hoi. hieu tu cham ((vuc van) or (luc van)) hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y lang xa hoi. hieu tu cham ((vuc van) OR (luc van)) hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu sach y lang xa hoi. hieu tu cham ((vuc van) or (luc van)) hanh vi ((cua tre) or (cua te))*.