Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tay dang » tay dong, tay dung, tay lang
thai cua » than cua, tai cuc, tri cua
tac dung » sach dung, xay dung, tin dung
va manh » van manh, va danh, va hanh
hai cua » dai cua, hoi cua, lai cua
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xay hoi » xa hoi, tay hoi, cay phoi
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((tay dang) or (tac dung)) xay hoi. hieu ve cac xuc va manh ((hai cua) OR (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((tay dang) OR (tac dung)) xay hoi. hieu ve cac xuc va manh ((hai cua) OR (thai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((tay dang) or (tac dung)) xay hoi. hieu ve cac xuc va manh ((hai cua) OR (thai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((tay dang) or (tac dung)) xay hoi. hieu ve cac xuc va manh ((hai cua) OR (thai cua)) tre*.