Perhaps you should try some spelling variations:
tinh hai » tinh thai, tinh chat, trinh han
lanh hai » manh hai, thanh hai, lang chai
tu sach » thu sach, su sach, te sach
coc ban » co ban, cac ban, hoc ban
anh hai » manh hai, anh thai, anh bai
cac coc » cac cuoc, cac co, cac toc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
ve cac » va cac, vien cac
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach v nang xa hoi. hieu ve cac coc ban ((anh hai) or (((lanh hai) or (tinh hai)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu ve cac coc ban ((anh hai) OR (((lanh hai) OR (tinh hai)))) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu ve cac coc ban ((anh hai) or (((lanh hai) or (tinh hai)))) cua tre*.