Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tang van » dang van, hoang van, trong van
chat xuc » chat huu, cam xuc, chao xu
dua tren » dung tren
tu sach » thu sach, su sach, te sach
ky tang » ky nang, ky dang, kho tang
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
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: ((tu sach) or (thuat sach)) ky tang van hoi. hieu ve chat xuc va hanh vi dua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky tang van hoi. hieu ve chat xuc va hanh vi dua tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky tang van hoi. hieu ve chat xuc va hanh vi dua tren*.