Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
san chat » van chat, san chay, ban chat
chat cao » chat co, chat cho, chat bao

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) or (hoc thieu)) sach - canh tranh cua nhung cong san chat cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) sach - canh tranh cua nhung cong san chat cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) sach - canh tranh cua nhung cong san chat cao*.