Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dat tren » dat trong, dua tren
lang xa » lang ha, dang xay, lang van
qua cau » quan cau, qua cac, qua ca
xuc van » duc van, vuc van, xuc ban
luc van » luoc van, luu van, duc van
hanh va » hang va, hanh vi
va dat » va dao, va dau, va dap

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: thuat sach _ lang xa hoi. hieu qua cau ((xuc van) OR (luc van)) hanh va dat tren~.
• Adding a wildcard symbol may retrieve word variants: thuat sach _ lang xa hoi. hieu qua cau ((xuc van) or (luc van)) hanh va dat tren*.