Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh han » trinh quan
song cong » cong cong, tong cong, song hong
han song » phan song, han tong, can song
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - hanh trinh han song cong san ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - hanh trinh han song cong san ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - hanh trinh han song cong san ((toan cau) or (toan tap))*.