Perhaps you should try some spelling variations:
thang long » thanh cong
nhung cong » dung cong, thong cong, hang cong
chuc danh » chuc nganh, thuc hanh, chuc nang
chua xang » chua nang, chuc nang, chu bang
hanh han » hanh nhan, hanh phan, hanh san
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
han ca » hang ca, han cua, dan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chuc danh) or (chua xang)) - hanh han ca ((nhung cong) or (thang long)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chuc danh) OR (chua xang)) - hanh han ca ((nhung cong) OR (thang long)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: chao ((chuc danh) or (chua xang)) - hanh han ca ((nhung cong) or (thang long)) dan toan cao*.