Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, va tinh, le thanh
chat soc » cham soc, chat hoc, chat doc
van chat » cao chat
nang xa » nang x, lang xa, nang ma
te sach » toc sach
hoi ve » hoi va, moi ve, noi ve
te sac » te cac, te san

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) OR (te sach)) ky nang xa hoi. hieu van chat soc ((va thanh) or (ban thanh)) hoi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te sach)) ky nang xa hoi. hieu van chat soc ((va thanh) OR (ban thanh)) hoi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te sach)) ky nang xa hoi. hieu van chat soc ((va thanh) or (ban thanh)) hoi ve triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te sach)) ky nang xa hoi. hieu van chat soc ((va thanh) or (ban thanh)) hoi ve triet*.