Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thanh ve » hanh ve, thanh va, thanh van
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
qua dau » qua da, qua bau, qua dan
dau xac » dau xay, dan xac
xac van » cac van, tac van, sac van
cua tre » cua te, cuu tre, cua triet

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 ly hang xa hoi. hieu qua dau xac van ((thanh ve) or (thanh vien)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly hang xa hoi. hieu qua dau xac van ((thanh ve) OR (thanh vien)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly hang xa hoi. hieu qua dau xac van ((thanh ve) or (thanh vien)) cua tre*.