Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » chat xuc, cham soc, pham duc
lang van » dang van, tang van, hoang van
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua te » cua tu

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

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