Perhaps you should try some spelling variations:
khien bang » phien ban, khien dong
trung tuan » trung thanh, trung tam, tran tuan
hoc khien » hoc hien, hoc nghien, hoc thieu
trung cua » truong cua, trung cap, dung cua
hang nong » thang long, han tong
nhung bo » nhung bi, nhung bai, nhung don
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien bang - hanh ((trung cua) or (trung tuan)) ((nhung bo) or (hang nong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien bang - hanh ((trung cua) OR (trung tuan)) ((nhung bo) OR (hang nong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc khien bang - hanh ((trung cua) or (trung tuan)) ((nhung bo) or (hang nong)) dan than cau*.