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
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va danh, ban hanh
lam xuc » cam xuc, lam duoc
bang xa » lang xa, bang va, mang xa
va lam » van lam, va lap

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) OR (va thanh)) vi ((dua tren) or (cuu tre))~.
• 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) OR (va thanh)) vi ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thien bang xa hoi. lieu va lam xuc ((va hanh) OR (va thanh)) vi ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so sach thien bang xa hoi. lieu va lam xuc ((va hanh) OR (va thanh)) vi ((dua tren) or (cuu tre))*.