Perhaps you should try some spelling variations:
tieu danh » dieu danh, tiep danh, thien danh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
anh dinh » hanh dinh, lanh dinh, anh kinh
huu dung » huu tung, huu quang, thuy dung
lang van » dang van, tang van, hoang van
van dau » van dao, phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu danh - ((anh dinh) or (hanh tinh)) huu dung cong lang van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu danh - ((anh dinh) OR (hanh tinh)) huu dung cong lang van dau*.