Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
tay lang » tai lang, tay quang, tham lang
tay tang » tay trung, tay quang, tay tieng
ban hanh » ban hang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc ban » thuc ban, truc ban, tu ban
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, yen lang
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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) or (((tay lang) or (tay tang)))) van hoi. hieu ve cam tuc ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y lang) OR (((tay lang) OR (tay tang)))) van hoi. hieu ve cam tuc ban hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ((y lang) or (((tay lang) or (tay tang)))) van hoi. hieu ve cam tuc ban hanh vi cua tre*.