Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
san khang » van khang, san chang, san khong
cong san » cong tac
khang va » hang va, thang va, khang a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) khang - canh tranh cua nhung cong san khang va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) khang - canh tranh cua nhung cong san khang va.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) khang - canh tranh cua nhung cong san khang va*.