Perhaps you should try some spelling variations:
hoc thieu » hoc hien
luan cong » luat cong, luong cong, luan chung
cong dung » cuong dung, cong dong, cong luong
dan luan » doanh luan, dung luan, tang luan
dung dat » dung va, dung tai
dat phan » data phan, dam phan, sat 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: ((hoc thieu) or (toc thieu)) sang - van dan luan cong dung dat phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - van dan luan cong dung dat phan tu*.