Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh tai, thanh oai
thanh van » thanh san, thanh toan, thanh phan
van nang » van quang, van ban, van dong
hieu van » hieu va, thien van, lieu va
sach dao » lanh dao
nang tuc » nang thuc, nang luc, nang tu
su sach » so sach, vu sach
long ha » dong ha, cong ha, dong hoa
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
tuc ta » tuc tap, tuc tao, tuc tat

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach dao ((nang xa) or (long ha)) hoi. hieu van nang tuc ta ((thanh vai) OR (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dao ((nang xa) OR (long ha)) hoi. hieu van nang tuc ta ((thanh vai) OR (thanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach dao ((nang xa) or (long ha)) hoi. hieu van nang tuc ta ((thanh vai) OR (thanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach dao ((nang xa) or (long ha)) hoi. hieu van nang tuc ta ((thanh vai) OR (thanh van)) cua tre*.