Perhaps you should try some spelling variations:
tieu xanh » chieu xanh, dieu hanh, tien anh
tieu danh » dieu danh, tiep danh, thien danh
hanh nang » ganh nang, hanh mang, hanh trang
dung cong » dung trong
anh nang » ganh nang, anh bang, anh dang
qua dung » quang dung, su dung, qua song
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 (tieu danh)) - ((hanh nang) or (anh nang)) qua dung cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (tieu danh)) - ((hanh nang) OR (anh nang)) qua dung cong tap toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((tieu xanh) or (tieu danh)) - ((hanh nang) or (anh nang)) qua dung cong tap toan cau*.