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