Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec coc » viec doc, viec cong, viec cuoi
van hanh » van thanh, ban hanh, van anh
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
va hanh » va thanh, va danh, ban hanh
vai cua » dai cua, hai cua, lai cua
vu van » tu van
ma hoi » mai hoi, xa hoi, ma hoa
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: vu van ((ky sang) OR (ky dang)) ma hoi. hieu viec coc luc ((va hanh) or (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu van ((ky sang) OR (ky dang)) ma hoi. hieu viec coc luc ((va hanh) OR (van hanh)) vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu van ((ky sang) OR (ky dang)) ma hoi. hieu viec coc luc ((va hanh) or (van hanh)) vai cua te*".