Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
cong thanh » dong thanh, cong tan, truong thanh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
toan ban » van ban

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: hoc thieu khang - hanh tranh cua nhung ((cong thanh) OR (cong trinh)) toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - hanh tranh cua nhung ((cong thanh) or (cong trinh)) toan ban*.