Perhaps you should try some spelling variations:
khien bang » phien ban, khien dong
tinh trang » minh trang, tinh quang, tinh toan
nhung cong » dung cong, thong cong, hang cong
hoc khien » hoc hien, hoc nghien, hoc thieu
cua nhung » va nhung
cong hach » cong sach, cong thanh, cong khanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien bang - ((tinh trang) or (canh tranh)) cua nhung cong hach ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien bang - ((tinh trang) OR (canh tranh)) cua nhung cong hach ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien bang - ((tinh trang) or (canh tranh)) cua nhung cong hach ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc khien bang - ((tinh trang) or (canh tranh)) cua nhung cong hach ((toan cau) OR (toan ban))*.