Perhaps you should try some spelling variations:
thien manh » tien manh, thien anh, thien danh
hanh trinh » canh tranh, hanh chinh
va tuong » va thuong, xa truong, va phuong
va thong » va thuong, va phuong, he thong
cong san » cong tac
toan cao » toan tap
toan ban » van ban
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 manh - hanh trinh ((va tuong) or (va thong)) cong san ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoan thien manh - hanh trinh ((va tuong) OR (va thong)) cong san ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoan thien manh - hanh trinh ((va tuong) or (va thong)) cong san ((toan cao) or (toan ban))*.