Perhaps you should try some spelling variations:
dung tuong » dung thuong, dung truong, dung trong
hoc thieu » hoc hien
tuong dan » huong dan, tung dan, xuong dan
van thang » van thanh, van khang, van hang
phan dan » phan dang, phan dau, nhan dan
dan dung » van dung, tin dung, ap dung
thang ca » thang cua, hang ca, tang ca
dan van » dang van, doan van, dao van

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