Perhaps you should try some spelling variations:
tien lang » tien long, tien luong, tien hoang
hanh dung » thanh dung, anh dung, hanh dong
bang cong » dang cong, bang song, hang cong
ten lang » den lang, yen lang, tinh lang
dung cua » dung luan, dung cho
cua bang » chua bang, cua ban, cua dang
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: hoc ((tien lang) or (ten lang)) - hanh dung cua bang cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien lang) OR (ten lang)) - hanh dung cua bang cong tap toan cau*.