Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh ve » hanh vi, hanh va, hanh kem
cao xuc » cao duc, cao suc, chat xuc
sach vu » sach tu, sach uu, sach xu
su tien » su kien, su hien, tu tieng
hieu va » lieu va, hieu qua
sach va » sach xa, sach ha, sach dao
x hoi » xa hoi, o hoi, x ho
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: su ((sach vu) OR (sach va)) nang x hoi. hieu va ((cao xuc) or (cam xuc)) van hanh ve su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach vu) OR (sach va)) nang x hoi. hieu va ((cao xuc) OR (cam xuc)) van hanh ve su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach vu) OR (sach va)) nang x hoi. hieu va ((cao xuc) or (cam xuc)) van hanh ve su tien".
• Adding a wildcard symbol may retrieve word variants: su ((sach vu) OR (sach va)) nang x hoi. hieu va ((cao xuc) or (cam xuc)) van hanh ve su tien*.