Perhaps you should try some spelling variations:
hoc thieu » hoc hien
thinh dan » thinh doan, trinh dan, hinh dan
cong dung » cuong dung, cong dong, cong luong
lan cong » luan cong, lanh cong, van cong
dung van » duong van, dung va, dang van
van phan » van phong, van thanh, luan phan
dan lan » dan luan, dan lap, dam lan

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 - thinh dan lan cong dung van phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) sang - thinh dan lan cong dung van phan tu.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) sang - thinh dan lan cong dung van phan tu*.