Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
chua nang » chuc nang, chua xang, cuu nang
van thang » van thanh, van khang, van hang
thang cap » thong cap, than cap, trung cap
kha nang » phap nang, ky nang, ki nang
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien danh) or (tieng anh)) - hanh tranh ((chua nang) OR (kha nang)) cong van thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (tieng anh)) - hanh tranh ((chua nang) OR (kha nang)) cong van thang cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien danh) or (tieng anh)) - hanh tranh ((chua nang) OR (kha nang)) cong van thang cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (tieng anh)) - hanh tranh ((chua nang) OR (kha nang)) cong van thang cap*.