Perhaps you should try some spelling variations:
dung tuong » dung thuong, dung truong, dung trong
tuong dang » truong dang, tuong dan, trong dang
hoc thieu » hoc hien
phan day » phan dau, phap day, phan xay
day dung » xay dung, dan dung, duy dung
dang van » hoang van, hang va
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)) tinh - phan day dung tuong dang van dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - phan day dung tuong dang van dan ca.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - phan day dung tuong dang van dan ca*.