Perhaps you should try some spelling variations:
xa nang » da nang, va nang, xa nong
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
hoi cua » hoi chuc
cac tuc » cac tu, cac tac, cac nuoc
doi cua » dai cua
cac toc » cac toi, cac nuoc, cac thoi
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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 lang xa hoi. hieu ve ((cac tuc) OR (cac toc)) xa nang ((doi cua) or (hoi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang xa hoi. hieu ve ((cac tuc) OR (cac toc)) xa nang ((doi cua) OR (hoi cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu ve ((cac tuc) OR (cac toc)) xa nang ((doi cua) or (hoi cua)) triet*".