Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
cua cua » cua chua, ca cua, qua cua
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
so sac » so sach, so dac
sac ky » cac ky, sai ky
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 sac ky ((nang xa) or (tang ma)) hoi. hieu ve cam luc ((van hanh) OR (ban hanh)) cua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((nang xa) OR (tang ma)) hoi. hieu ve cam luc ((van hanh) OR (ban hanh)) cua cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky ((nang xa) or (tang ma)) hoi. hieu ve cam luc ((van hanh) OR (ban hanh)) cua cua triet".
• Adding a wildcard symbol may retrieve word variants: so sac ky ((nang xa) or (tang ma)) hoi. hieu ve cam luc ((van hanh) OR (ban hanh)) cua cua triet*.