Perhaps you should try some spelling variations:
vu sach » vu bach, vu khach
lang xa » lang ha, dang xay, lang van
hanh va » hanh vi
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
su sach » so sach
cua tre » cua te, cuu tre, cua triet
ve coc » ve cuoc, ve cac, ve co
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (su sach)) ky lang xa hoi. hieu ve coc luc va ((hanh va) or (hang va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky lang xa hoi. hieu ve coc luc va ((hanh va) OR (hang va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ky lang xa hoi. hieu ve coc luc va ((hanh va) or (hang va)) cua tre*.