Perhaps you should try some spelling variations:
van nhuong » van chuong, van huong, van thuong
van phuong » van phong, va phuong, van chuong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chuc danh) or (chua xang)) - nhanh quang ((van nhuong) OR (van phuong)) cong van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chuc danh) OR (chua xang)) - nhanh quang ((van nhuong) OR (van phuong)) cong van tan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chuc danh) or (chua xang)) - nhanh quang ((van nhuong) OR (van phuong)) cong van tan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chuc danh) or (chua xang)) - nhanh quang ((van nhuong) OR (van phuong)) cong van tan tap*.