Perhaps you should try some spelling variations:
hieu van » thien van, lieu va
thu hang » thi hang, thuc hanh, thu huong
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
sach thu » sach thue, sach thieu, sach tham
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
luc van » luoc van, luu van, duc van
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
hang xa » hoang xa, hang va, hang ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach thu hang xa hoi. ((((hieu ve) or (hieu va))) or (hieu van)) cam luc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hang xa hoi. ((((hieu ve) OR (hieu va))) OR (hieu van)) cam luc van hanh vai cua tre*.