Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
hang vai » hang va, hang hai, hang vi
te sach » toc sach
duc ban » duc tan, duc van, dua ban
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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) or (su sach)) ky nang x ho. hieu ve cac duc ban ((hang vai) or (hang tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky nang x ho. hieu ve cac duc ban ((hang vai) OR (hang tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky nang x ho. hieu ve cac duc ban ((hang vai) or (hang tai)) cua tre*.