Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
cuc ban » cua ban, cac ban, cuu ban
xuc ban » duc ban, quoc ban, xuat ban
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
su tien » su kien, su hien, tu tieng
va cao » va cac, va co, va dao
sach v » sach va, sach 2, sach vay
vi su » va su, ve su, ki 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 v) or (sach y)) nang xa hoi. hieu va cao ((xuc ban) OR (cuc ban)) thanh vi su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (sach y)) nang xa hoi. hieu va cao ((xuc ban) OR (cuc ban)) thanh vi su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) or (sach y)) nang xa hoi. hieu va cao ((xuc ban) OR (cuc ban)) thanh vi su tien".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (sach y)) nang xa hoi. hieu va cao ((xuc ban) OR (cuc ban)) thanh vi su tien*.