Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thoi hanh » thi hanh, troi hanh, tuoi thanh
tranh ban » trinh ban, tranh hang, tranh luan
ban nhung » san nhung, ban phuong, gian nhung
doi thoi » doi thoai, moi thoi, do thoi
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
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: doi thoi hanh - canh tranh ban nhung cong bai toan cao~.
• Adding a wildcard symbol may retrieve word variants: doi thoi hanh - canh tranh ban nhung cong bai toan cao*.