Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
nang xa » nang x, lang xa, nang ma
va cao » va cac, va co, va dao
sach v » sach va, sach 2, sach vay
vi su » va su, ve su, oi su
ki su » ky 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 thanh ((vi su) OR (ki 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 thanh ((vi su) OR (ki 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 thanh ((vi su) OR (ki su)) tien".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (sach y)) nang xa hoi. hieu va cao xuc ban thanh ((vi su) OR (ki su)) tien*.