Perhaps you should try some spelling variations:
sach tien » sach tren, sach thieu
tien bang » thien bang, mien bang, tien lang
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
dinh ve » dinh ket, dinh van
va dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren, cau treo
cam tuc » cam tu, nam thuc, dam thuc
bang xa » lang xa, bang va, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach tien bang xa hoi. hieu van ((cam tuc) OR (cam xuc)) va dinh ve ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien bang xa hoi. hieu van ((cam tuc) OR (cam xuc)) va dinh ve ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tien bang xa hoi. hieu van ((cam tuc) OR (cam xuc)) va dinh ve ((dua tren) or (cuu tre))*".