Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban tinh » ban thanh, quan tinh, ban hanh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, dua tren
tinh vi » trinh vi, tinh voi, tinh va
cuc ban » cua ban, cac ban, cuu ban
tu sach » thu sach, su sach, te sach
cam cuc » cam xuc, cham cuu, pham cuc
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van

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 _ lang xa hoi. ((hieu ve) or (hieu van)) cam cuc ban tinh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach _ lang xa hoi. ((hieu ve) OR (hieu van)) cam cuc ban tinh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ lang xa hoi. ((hieu ve) or (hieu van)) cam cuc ban tinh vi ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach _ lang xa hoi. ((hieu ve) or (hieu van)) cam cuc ban tinh vi ((cua tre) OR (cua triet))*.