Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh tung » thanh cong
ha thuong » han thuong, hai thuong, va thuong
doc hieu » toc thieu, hoc thieu
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cao » toan ban, toan tap
tung ha » trung ha, dung ha, tung ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (hoc hien)) xanh - thanh tung ha thuong cong ban toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc hien)) xanh - thanh tung ha thuong cong ban toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc hien)) xanh - thanh tung ha thuong cong ban toan cao*.