Perhaps you should try some spelling variations:
sach thien » sach thieu, sach tien, cach thien
thien bang » khien bang, thien ban, thien dang
dua tren » dung tren
cau tren » cu tren, dau tren, ca tren
so sach » so sanh, bo sach, co sach
bang xa » lang xa, bang va, mang xa
lam xuc » cam xuc, lam duoc
va hanh » van hanh, va thanh, va danh
va lam » van lam, va lap
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thien bang xa hoi. lieu va lam xuc va hanh vi ((dua tren) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thien bang xa hoi. lieu va lam xuc va hanh vi ((dua tren) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: so sach thien bang xa hoi. lieu va lam xuc va hanh vi ((dua tren) or (cau tren))*.