Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nang cai » nang cao, nang tai, nang cap
thanh va » thanh van, hanh va, thanh ha
cai hoi » cau hoi, dai hoi, cai hoa
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
su tien » su kien, su hien, tu tieng
sach v » sach va, sach 2, sach vay

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach y)) nang cai hoi. ((hieu ve) OR (hieu qua)) cam xuc van thanh va su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) OR (sach y)) nang cai hoi. ((hieu ve) or (hieu qua)) cam xuc van thanh va su tien~".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) OR (sach y)) nang cai hoi. ((hieu ve) or (hieu qua)) cam xuc van thanh va su tien*.