Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
cua truong » cua trung, xuan truong, cac truong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap

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 tinh - canh tranh cua truong ((cong dan) OR (cong san)) ((toan tai) OR (toan cao))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tranh cua truong ((cong dan) or (cong san)) ((toan tai) or (toan cao))*.