Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
du cua » duy cua, dau cua, dum cua
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sai ky) or (cac ky)) nang ma hoi. hieu ve cac xuc ((va hanh) OR (van hanh)) du cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sai ky) OR (cac ky)) nang ma hoi. hieu ve cac xuc ((va hanh) OR (van hanh)) du cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sai ky) or (cac ky)) nang ma hoi. hieu ve cac xuc ((va hanh) OR (van hanh)) du cua triet*".