Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » thong cong, hang cong, nhung don
hien xanh » hien hanh, chieu xanh, hien khanh
tranh van » tran van, trinh van, thanh van
dung cong » dung trong
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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 xanh) or (hien nhanh)) - canh tranh van ((nhung cong) or (dung cong)) dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - canh tranh van ((nhung cong) OR (dung cong)) dan chan tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - canh tranh van ((nhung cong) or (dung cong)) dan chan tu*.