Perhaps you should try some spelling variations:
cua triet » su triet, va triet
hieu viec » nhieu viec, hieu ve, sieu viet
cua viet » ca viet, hoa viet, cua vat
hang tai » hang va, dung tai
viec cac » vien cac, viec cua, viec lam
lang xa » lang ha, dang xay, lang van
cac xuc » cam xuc, cac nuoc, chat xuc
va hang » van hang, va nang, va lang
nang xa » nang x, nang ma, mang xa
tu sach » thu sach, su sach, te sach
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) or (lang xa)) hoi. hieu viec cac xuc va hang tai ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (lang xa)) hoi. hieu viec cac xuc va hang tai ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang xa) or (lang xa)) hoi. hieu viec cac xuc va hang tai ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (lang xa)) hoi. hieu viec cac xuc va hang tai ((cua triet) OR (cua viet))*.