Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
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
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
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 va tham thuc 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 va tham thuc va dang hai cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. hieu va tham thuc va dang hai cua viet*.