Perhaps you should try some spelling variations:
dung sang » dung san, dung dang, dung nang
ban thanh » ban hanh, ban hang
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
duc ban » duc tan, duc van, dua ban
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tay hoi » tay ho, tay thai
tao hoi » tao khoi, tao boi, thao hoc
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 dung sang ((tao hoi) or (tay hoi)). hieu ve cham duc ban thanh san ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach dung sang ((tao hoi) OR (tay hoi)). hieu ve cham duc ban thanh san ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach dung sang ((tao hoi) or (tay hoi)). hieu ve cham duc ban thanh san ((cuu tre) or (cua te))*.