Perhaps you should try some spelling variations:
phan cong » thanh cong
cong cong » cong dong, trong cong, dung cong
gian cham » gian cua, gian cac, gian ha
doc hieu » hoc thieu, hoc hien
dan phan » doan phan, dan chan, van phan
cong san » cong tac
san gian » dan gian, san giao, van gian
van dan » van ban, ban dan, van dao

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