Perhaps you should try some spelling variations:
cua triet » su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
tuc gia » tac gia, duc gia, toc gia
ve cam » ve cham, ve cac, va cam

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 y ((nang xa) or (nang x)) hoi. hieu ve cam tuc gia thanh vi ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang x)) hoi. hieu ve cam tuc gia thanh vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((nang xa) or (nang x)) hoi. hieu ve cam tuc gia thanh vi ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang x)) hoi. hieu ve cam tuc gia thanh vi ((cua triet) OR (cua viet))*.