Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
nhung cong » dung cong, thong cong, hang cong
thanh pham » thanh phan, thanh pho, thanh hai
van thanh » ban thanh, van tuan
hoc dieu » hoc thieu
cong van » cong vang, cong san, song van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong van thanh pham~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc hien)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong van thanh pham~".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) xanh - ((hanh tranh) OR (hanh trinh)) va nhung cong van thanh pham*.