Perhaps you should try some spelling variations:
hoc thieu » hoc hien
thinh dan » thinh doan, trinh dan, hinh dan
dung dung » ung dung, dung ung, dung dong
dung data » dung dat, dung dan, dung danh
data phan » dam phan, sat phan, vat phan
dan dung » van dung, tin dung, ap dung
dan dan » dang dan, ban dan, dao dan

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