Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang noi » nang doc
nang doi » nang doc, hang doi, nang dong
trang xa » trang va, trang ha, trong xa
hieu van » hieu va, thien van, lieu va
cau tac » cau thac, cau tao, cuu tac
van cau » van dau, van hau, van chat
sac ky » cac ky
tac xa » tuc xa, tac da

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) OR (sai ky)) trang xa hoi. hieu van cau tac xa ((nang doi) or (nang noi)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) trang xa hoi. hieu van cau tac xa ((nang doi) OR (nang noi)) ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) trang xa hoi. hieu van cau tac xa ((nang doi) or (nang noi)) ve triet*".