Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
sach ky » sac ky, sach ty, sach kem
hanh di » hanh vi, hanh de, hang di
cac thu » cach thuc, cac thoi
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cam thu » nam thu, ca thu, cam phu
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: su ((sach ky) or (sach y)) nang xa hoi. hieu ve ((cam thu) OR (cac thu)) ban hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang xa hoi. hieu ve ((cam thu) OR (cac thu)) ban hanh di cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (sach y)) nang xa hoi. hieu ve ((cam thu) OR (cac thu)) ban hanh di cua triet*".