Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lanh tranh » lan tranh, hanh trinh, sach tranh
cua nhung » va nhung
chi sang » chi lang, chieu sang, chi chang
cong tap » cuong tap, cong tac, cong tan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
doi chi » doi khi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - ((lanh tranh) OR (canh tranh)) cua nhung cong tap ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi sang - ((lanh tranh) or (canh tranh)) cua nhung cong tap ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: doi chi sang - ((lanh tranh) or (canh tranh)) cua nhung cong tap ((toan cau) OR (toan tap))*.