Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
dieu danh » dieu hanh, tieu danh, dia danh
trung hoc » trung quoc
dung cong » dung trong
trung ha » trung tam, trung cap
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » 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 xanh) or (dieu danh)) - manh ((trung ha) or (trung hoc)) dung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (dieu danh)) - manh ((trung ha) OR (trung hoc)) dung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (dieu danh)) - manh ((trung ha) or (trung hoc)) dung cong tap toan cau*.