Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh cua » manh cua, hang cua, hanh sua
hieu va » lieu va, hieu qua
tang ma » tang van
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
nang xa » nang x, lang xa, nang ma
cua cua » cua chua, ca cua, qua cua
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
so sac » so sach, so dac

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 (mang may))) or (tang ma)) hoi. hieu va cam luc van hanh cua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((((nang xa) OR (mang may))) OR (tang ma)) hoi. hieu va cam luc van hanh cua cua triet.
• Adding a wildcard symbol may retrieve word variants: so sac ky ((((nang xa) or (mang may))) or (tang ma)) hoi. hieu va cam luc van hanh cua cua triet*.