Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
hieu va » lieu va, hieu qua
cao xuc » cao duc, cao suc, chat xuc
hanh ve » hanh vi, hanh va, hanh kem
su tien » su kien, su hien, tu tieng
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: tu sach vu 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: "tu sach vu nang x hoi. hieu va ((cao xuc) OR (cam xuc)) van hanh ve su tien".
• Adding a wildcard symbol may retrieve word variants: tu sach vu nang x hoi. hieu va ((cao xuc) OR (cam xuc)) van hanh ve su tien*.