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

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 truc van dang hai ca 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 truc van dang hai ca viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. hieu van cham truc van dang hai ca viet*.