Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
cay mang » cach mang, cay mac, cay cong
van hanh » van thanh, ban hanh, van anh
dua tren » dung tren
may hoi » may thoi, tay hoi, mai hoi
qua cau » quan cau, qua cac, qua ca
cau xuc » cam xuc, cau luc, cau truc
xuc van » duc van, luc van, vuc van
vi dua » vi du, vi dum, vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) or (thuat sach)) cay mang may hoi. hieu qua cau xuc van hanh vi dua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (thuat sach)) cay mang may hoi. hieu qua cau xuc van hanh vi dua tren.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (thuat sach)) cay mang may hoi. hieu qua cau xuc van hanh vi dua tren*.