Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
dong huong » dong thuong, dong duong, cong huong
hoc thieu » toc thieu, hoc hien
canh tran » canh tranh, hanh trang, banh trang
doan phan » doanh phan, toan phan, dan phan
tran van » luan van
dan chan » dan gian, dan ca, van chat

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 tinh - canh tran van dong huong ((doan phan) or (dan chan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh tran van dong huong ((doan phan) OR (dan chan)) cac.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh tran van dong huong ((doan phan) or (dan chan)) cac*.