Perhaps you should try some spelling variations:
thanh chac » thanh cac, thanh cham, thanh chau
thanh cha » thanh ha, thanh nha, thanh phan
hieu phan » phieu phan, lieu phan, hieu pham
phan dau » phan tu, hang dau
dang van » hoang van, hang va
dau luc » cau luc, dau luan, dau nuoc
cua tre » cua te, cuu tre, cua triet
van hoc » van hoa
ky dang » ky nang, ky danh
luc va » duc va, tuc va, loc va
vu san » va san, vu ban
vu sai » vu hai, vu dai, vu tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sai) OR (vu san)) ky dang van hoc. hieu phan dau luc va ((thanh cha) or (thanh chac)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sai) OR (vu san)) ky dang van hoc. hieu phan dau luc va ((thanh cha) OR (thanh chac)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sai) OR (vu san)) ky dang van hoc. hieu phan dau luc va ((thanh cha) or (thanh chac)) cua tre*".