Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
lang xa » lang ha, dang xay, lang van
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cuu tre, cua triet, dua tren
y lang » o lang, _ lang, tay lang
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: toc sach y lang xa hoi. hieu van nam xuc va hanh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y lang xa hoi. hieu van nam xuc va hanh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc sach y lang xa hoi. hieu van nam xuc va hanh va ((cua tre) or (cua te))*.