Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
van tham » van thanh, van tuan, van chat
ban hang » ngan hang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
tai hoi » tai khoi, dai hoi, tai hai
hoc ban » hoc bang, hoc dan, hoc bai
hang ve » hang va, hanh ve, hang ke
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te cua

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 ky nang tai hoi. hieu ((cao chat) or (van tham)) hoc ban hang ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang tai hoi. hieu ((cao chat) OR (van tham)) hoc ban hang ve cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang tai hoi. hieu ((cao chat) or (van tham)) hoc ban hang ve cua tre*.