Perhaps you should try some spelling variations:
hanh phan » thanh phan, anh phan, hanh han
phan cong » thanh cong
dong lang » dong bang, cong lang, dong lanh
lang gian » dan gian, nang giao, lang bien
doc hieu » hoc thieu, hoc hien
van hanh » van thanh, ban hanh, van anh
gian dan » gian lang

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 (toc thieu)) nganh - van hanh phan cong dong lang gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) nganh - van hanh phan cong dong lang gian dan.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) nganh - van hanh phan cong dong lang gian dan*.