Perhaps you should try some spelling variations:
thanh chac » thanh cac, thanh cham, thanh chau
thanh cha » thanh ha, thanh nha, thanh phan
hieu van » hieu va, thien van, lieu va
dang van » hoang van, hang va
dau duc » dao duc, dang duc, dau nuoc
cua tre » cua te, cuu tre, cua triet
van dau » van dao, phan dau
van hoc » van hoa
ky dang » ky nang, ky danh
vu hai » su hai, vu ha
vu sai » vu san, 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 hai)) ky dang van hoc. hieu van dau duc 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 hai)) ky dang van hoc. hieu van dau duc va ((thanh cha) OR (thanh chac)) cua tre*.