Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ty » sach tu, sach thu, xach tay
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
xang xa » lang xa, mang xa, ang xa
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va hang di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) OR (hieu qua)) cam tuc va hang di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va hang di cua triet".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu qua)) cam tuc va hang di cua triet*.