Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang cau » hang dau, hang ca, nhung cau
van hanh » van thanh, ban hanh, van anh
ky hang » ky nang, ly hang, ky dang
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, hoi cua
su sai » su tai, su hai, su dai
sai ky » sac 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: su sai ky hang cau hoi. hieu ve cam luc ((van hanh) or (va danh)) hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky hang cau hoi. hieu ve cam luc ((van hanh) OR (va danh)) hai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sai ky hang cau hoi. hieu ve cam luc ((van hanh) or (va danh)) hai cua triet*.