Perhaps you should try some spelling variations:
ban hanh » ban hang
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
chat xu » chat xuc, chao xu, chat huu
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
vi su » va su, ve su, ki su

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 hoi. hieu ve chat xu ((va hanh) or (ban hanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ve chat xu ((va hanh) OR (ban hanh)) vi su triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ve chat xu ((va hanh) or (ban hanh)) vi su triet*.