Perhaps you should try some spelling variations:
thien manh » tien manh, thien anh, thien danh
hanh trinh » canh tranh, hanh chinh
ton thien » hoan thien, toan thiet, doan thien
tong cong » trong cong, cong cong, dung cong
trinh ve » trinh he, trinh va, trinh vi
cong san » cong tac
toan cao » toan ban
toan tap » toan ban
ve tong » ve tuong, ve trong, ve cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ton thien manh - hanh trinh ve tong cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ton thien manh - hanh trinh ve tong cong san ((toan cao) OR (toan tap))*.