Perhaps you should try some spelling variations:
ban thanh » ban hanh
ban hang » ngan hang
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
sac ky » cac ky
hai ve » hoai ve, hai va, hai vu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) or (sai ky)) nang xa hoi. hieu ve pham duc ((ban thanh) OR (ban hang)) hai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sai ky)) nang xa hoi. hieu ve pham duc ((ban thanh) OR (ban hang)) hai ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) or (sai ky)) nang xa hoi. hieu ve pham duc ((ban thanh) OR (ban hang)) hai ve triet".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (sai ky)) nang xa hoi. hieu ve pham duc ((ban thanh) OR (ban hang)) hai ve triet*.