Perhaps you should try some spelling variations:
duong tuong » duong truong, duong trong, duong vuong
cong duong » cuong duong, cong dong, con duong
tuong dang » truong dang, tuong dan, trong dang
hoc thieu » hoc hien
phan cong » thanh cong
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 cong duong 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 cong duong tuong dang van dan ca*.