Perhaps you should try some spelling variations:
thien van » thi van
tan khang » van khang, tao khang, tinh khang
van pham » san pham, van phan, van phat
khang di » hang di, khang vi, khang voi
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
tu dan » tuc dan, cu dan, tu can
tu ban » thu ban, te ban
di va » dai va, di vao, doi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu dan) or (tu ban)) ky nang xa hoi. thien van pham duc tan khang di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu dan) OR (tu ban)) ky nang xa hoi. thien van pham duc tan khang di va triet.
• Adding a wildcard symbol may retrieve word variants: ((tu dan) or (tu ban)) ky nang xa hoi. thien van pham duc tan khang di va triet*.