Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan khai » dang khai, van khai, dang khoi
dang hai » dang khai, hang hai, dung hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
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: te sach ky lang xa hoi. hieu va cac tuc va ((dan khai) or (dang hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va cac tuc va ((dan khai) OR (dang hai)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va cac tuc va ((dan khai) or (dang hai)) cua triet*.