Perhaps you should try some spelling variations:
van khai » van hai, van khi, dan khai
cau theo » cau thi, cau tao
nang xa » nang x, lang xa, nang ma
va khai » va khao, va kha, va khi
va hanh » van hanh, va thanh, va danh
sai ky » sac ky
xuc va » duc va, tuc va, luc va
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sai ky) or (cac ky)) nang xa hoi. lieu ((va khai) OR (van khai)) xuc va hanh vi cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sai ky) OR (cac ky)) nang xa hoi. lieu ((va khai) OR (van khai)) xuc va hanh vi cau theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sai ky) or (cac ky)) nang xa hoi. lieu ((va khai) OR (van khai)) xuc va hanh vi cau theo".
• Adding a wildcard symbol may retrieve word variants: su ((sai ky) or (cac ky)) nang xa hoi. lieu ((va khai) OR (van khai)) xuc va hanh vi cau theo*.