Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cau » phan cau, can cau, chinh cau

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