Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
sach thue » sach thieu, sach tham, cach thuc
hanh lam » hanh kem, hanh va, dinh lam
sach thu » sach thieu, sach tham, cach thuc
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
tang xa » trang xa, tang ma, lang xa
cuu tre » cua tre, cau tren, cau treo
soc va » hoc va, loc va, doc va

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 thu) or (sach thue)) tang xa hoi. hieu vu cham soc va ((hanh lam) OR (thanh lap)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach thu) OR (sach thue)) tang xa hoi. hieu vu cham soc va ((hanh lam) OR (thanh lap)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach thu) or (sach thue)) tang xa hoi. hieu vu cham soc va ((hanh lam) OR (thanh lap)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach thu) or (sach thue)) tang xa hoi. hieu vu cham soc va ((hanh lam) OR (thanh lap)) cuu tre*.