Perhaps you should try some spelling variations:
thanh tiep » thanh hiep, thanh tien, thanh thieu
ban thanh » ban hanh, ban hang
tiep cua » tiep can, dieu cua, tap cua
tay tang » tay lang, tay trung, tay quang
cham duc » pham duc, cham soc, pham duy
su sach » so sach, vu sach
hieu su » hieu sau, tieu su, hieu so
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
hieu vu » hieu va, hieu ve, dieu vu
ty tang » ty xang, ty hang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty tang) OR (tay tang)) ma hoi. ((hieu vu) or (hieu su)) cham duc ban thanh tiep cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty tang) OR (tay tang)) ma hoi. ((hieu vu) OR (hieu su)) cham duc ban thanh tiep cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty tang) OR (tay tang)) ma hoi. ((hieu vu) or (hieu su)) cham duc ban thanh tiep cua tre*".