Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thang long » thanh cong
tranh ban » trinh ban, tranh hang, tranh luan
ban thang » ban hang, ban thanh, ban than
dan khoan » dan khoa, dai khoang, toan khoan
khoan cam » khoa cam, khoan va, phan cam
long dan » long doan, cong dan, nong dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - canh tranh ban thang long dan khoan cam~.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - canh tranh ban thang long dan khoan cam*.