Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien bach » vien bach, thien hach, hien hanh
trinh van » trinh han, trinh quan, trinh toan
dung cong » dung trong
van dung » van dong, xay dung, tin dung
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien bach - hanh trinh van dung cong ((dan than) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien bach - hanh trinh van dung cong ((dan than) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien bach - hanh trinh van dung cong ((dan than) or (dan chan)) cau*.