Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
duong cong » dung cong, luong cong, duong trong
tranh qua » tranh cua, thanh qua, trinh qua
qua duong » quan duong, qua dung, qua dong
cong dung » cuong dung, cong dong, cong luong
dung dan » dung dat, dung san, tung dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu nganh) or (viem gan)) - canh tranh qua duong cong dung dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (viem gan)) - canh tranh qua duong cong dung dan ca*.