Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
luan nang » luan van, van nang, luan san
nang nong » nang song, hang nong, nang dong
anh dong » anh son
nong dan » cong dan, nong san, nguong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((anh dong) or (anh huong)) luan nang nong dan chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((anh dong) OR (anh huong)) luan nang nong dan chan ban*.