Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
tong cong » cong cong, dung cong, dang cong
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.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh tranh cua ((tong cong) or (trong cong)) tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh cua ((tong cong) OR (trong cong)) tan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh cua ((tong cong) or (trong cong)) tan ((toan tai) or (toan cao))*.