Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh trinh » canh tranh, hanh chinh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
va cong » tai cong
hoan » hoang, hoa, soan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoan thien danh - hanh trinh ((((va cong) or (cua cong))) or (va thuong)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoan thien danh - hanh trinh ((((va cong) OR (cua cong))) OR (va thuong)) cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoan thien danh - hanh trinh ((((va cong) or (cua cong))) or (va thuong)) cong dan toan cao*.