Perhaps you should try some spelling variations:
thi phuong » thi truong
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, lieu va
thi hong » thi cong, thi hanh, thi nang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
van cac » van hac, van cau, van bac
luc va » duc va, tuc va
loc va » hoc va
x hoi » xa hoi, o hoi, x ho

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 ((thi hong) or (thi phuong)) x hoi. hieu van cac ((luc va) OR (loc va)) thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thi hong) OR (thi phuong)) x hoi. hieu van cac ((luc va) OR (loc va)) thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thi hong) or (thi phuong)) x hoi. hieu van cac ((luc va) OR (loc va)) thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((thi hong) or (thi phuong)) x hoi. hieu van cac ((luc va) OR (loc va)) thanh dai cua tre*.