Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
hanh thang » nhanh thang, thanh thang, hanh trang
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
thang va » hang va, trang va, thong va
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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 (thien danh)) - hanh thang va nhung cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu xanh) OR (thien danh)) - hanh thang va nhung cong tap toan ban*.