Perhaps you should try some spelling variations:
gian lang » gian dan
chu nang » chuc nang, chua nang, cuu nang
hanh ban » thanh ban, hang ban, hanh san
cong van » cong vang, cong san, song van
van hanh » van thanh, ban hanh, van anh
tho chu » theo chu, cho chu, ho chu
hanh ma » hanh mau, hanh may, hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tho chu nang - hanh ban ((gian lang) or (quan luan)) cong van hanh ma~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tho chu nang - hanh ban ((gian lang) OR (quan luan)) cong van hanh ma*.