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
dang hai » dang khai, hang hai, dung hai
cua viet » ca viet, hoa viet, cua vat
tu cach » tu cac
te sach » toc sach
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
va dang » van dang, va nang, va lang
hai cua » thai cua, dai cua, hoi cua

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