Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach va » sach xa, sach ha, sach dao
va nang » van nang, da nang, cam nang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
su hien » su kien, su tien, thu hien
ve su » va su

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 va nang xa hoi. hieu va cac xuc ((van ban) or (ban hanh)) ve su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach va nang xa hoi. hieu va cac xuc ((van ban) OR (ban hanh)) ve su hien.
• Adding a wildcard symbol may retrieve word variants: tu sach va nang xa hoi. hieu va cac xuc ((van ban) or (ban hanh)) ve su hien*.