Perhaps you should try some spelling variations:
thien manh » tien manh, thien danh, thien minh
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
trinh han » trinh quan
trinh he » trinh hoa, trinh thi, trinh ky
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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) or (thien anh)) - hanh ((trinh he) OR (trinh han)) thong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ton ((thien manh) OR (thien anh)) - hanh ((trinh he) OR (trinh han)) thong cong san toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ton ((thien manh) or (thien anh)) - hanh ((trinh he) OR (trinh han)) thong cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: ton ((thien manh) or (thien anh)) - hanh ((trinh he) OR (trinh han)) thong cong san toan cao*.