Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hien hanh » dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang chua » tang cua, tranh chua, tang ha
chua bang » chu bang, chua nang, chua xang
bang cong » dang cong, bang song, hang cong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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) or (hien hanh))) or (hieu manh)) - hanh tang chua bang cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (hien hanh))) OR (hieu manh)) - hanh tang chua bang cong van toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) or (hien hanh))) or (hieu manh)) - hanh tang chua bang cong van toan cao*.