Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dua tren » dung tren
cham xuc » cam xuc, chat xuc, cham soc
dan lai » dan loai, dan lap, dan lat
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
ma hoi » xa hoi, ma hoa, me hoi
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach _ sang ((ma hoi) OR (mai hoi)). hieu ve cham xuc va dan lai ((dua tren) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach _ sang ((ma hoi) OR (mai hoi)). hieu ve cham xuc va dan lai ((dua tren) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: thu sach _ sang ((ma hoi) OR (mai hoi)). hieu ve cham xuc va dan lai ((dua tren) or (cua te))*.