Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
khoan cam » khoa cam, khoan va, phan cam
cong cuu » cong cu, cong cua, song cuu
cuu tong » cuu cong, cuu tinh, huu tung
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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 - thanh cong cuu tong cong tan ((than cau) or (((than cap) or (khoan cam))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh cong cuu tong cong tan ((than cau) OR (((than cap) OR (khoan cam)))).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh cong cuu tong cong tan ((than cau) or (((than cap) or (khoan cam))))*.