Perhaps you should try some spelling variations:
phan dung » phan ung, phan dang, chan dung
dung cong » dung trong
cong nhat » cong nhan, cong ha, cong suat
nhat gian » nhat giao, nhat ban, phat giao
gian cham » gian cua, gian cac, gian ha
doc hieu » hoc thieu, hoc hien
dan phan » doan phan, dan chan, van phan
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 dung cong nhat gian cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) nganh - van dan phan dung cong nhat gian cham.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) nganh - van dan phan dung cong nhat gian cham*.