Perhaps you should try some spelling variations:
tieu danh » dieu danh, tiep danh, thien danh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan bang » luan nang, luan ban, luan tang
bang cong » dang cong, bang song, hang cong
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
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: theo ((tieu danh) or (dieu hanh)) - hanh tang luan bang cong san ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu danh) OR (dieu hanh)) - hanh tang luan bang cong san ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu danh) or (dieu hanh)) - hanh tang luan bang cong san ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu danh) or (dieu hanh)) - hanh tang luan bang cong san ((toan cau) OR (toan cao))*.