Perhaps you should try some spelling variations:
dang khai » dang khoi, quang khai, dang thi
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
dang hai » hang hai, dung hai, dong hai
van cham » van chat, van tham, va cham
cham tuc » nham thuc, pham thuc, tham thuc
nang xa » nang x, lang xa, nang ma
te sach » toc sach
tu cach » tu cac
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky nang xa hoi. hieu van cham tuc va ((dang hai) OR (dang khai)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky nang xa hoi. hieu van cham tuc va ((dang hai) OR (dang khai)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (te sach)) ky nang xa hoi. hieu van cham tuc va ((dang hai) OR (dang khai)) cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. hieu van cham tuc va ((dang hai) OR (dang khai)) cua viet*.