Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tang cuong » nang luong
cuong cong » luong cong, duong cong, dung cong
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
cong cong » cong dong, trong cong, dung cong
toan cau » toan ban, toan tap, toan tai
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 tang cuong cong cong trinh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tang cuong cong cong trinh ((toan cau) OR (toan cao))*.