Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
thi hang » thi hanh, thi nang, thi hong
hanh hai » thanh hai, nhanh hai, hang hai
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
hang xa » hoang xa, hang va, hang ca
va hanh » van hanh, va thanh, va danh
hai cau » hai chau, hai chu, hai hau
qua ca » qua cac, qua cua, qua cai
ca xuc » cam xuc, chat xuc
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: ((te sach) or (doc sach)) thi hang xa hoi. hieu qua ca xuc va hanh hai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (doc sach)) thi hang xa hoi. hieu qua ca xuc va hanh hai cau tren.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (doc sach)) thi hang xa hoi. hieu qua ca xuc va hanh hai cau tren*.