Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cam luc » cau luc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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: tu sac ky ((nang xa) or (nang x)) hoi. hieu ve ((cam luc) or (cam xuc)) van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang x)) hoi. hieu ve ((cam luc) OR (cam xuc)) van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang x)) hoi. hieu ve ((cam luc) or (cam xuc)) van hanh vi cua te*.