Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » chat xuc, cac cuoc, cac quoc
sach tu » sach thu, cach tu, sach ty
vi cua » vai cua, di cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu nang xa hoi. hieu ve ((((cac xuc) OR (cac nuoc))) or (cam xuc)) van hanh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu ve ((((cac xuc) OR (cac nuoc))) OR (cam xuc)) van hanh vi cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu ve ((((cac xuc) OR (cac nuoc))) or (cam xuc)) van hanh vi cua su".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu ve ((((cac xuc) OR (cac nuoc))) or (cam xuc)) van hanh vi cua su*.