Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
dang mai » dang hai, dang mau, dang bai
va hanh » va thanh, va danh, ban hanh
hoc mac » hoc ma, hoc may, hoc cac
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam
mac ky » cac ky, sac ky, bac ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc mac ky dang mai hoi. hieu ve cam xuc ((va hanh) OR (van hanh)) vi ((cua te) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc mac ky dang mai hoi. hieu ve cam xuc ((va hanh) OR (van hanh)) vi ((cua te) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc mac ky dang mai hoi. hieu ve cam xuc ((va hanh) OR (van hanh)) vi ((cua te) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: hoc mac ky dang mai hoi. hieu ve cam xuc ((va hanh) OR (van hanh)) vi ((cua te) or (ve triet))*.