Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
luan dang » luan nang, luan danh, luan dong
dang cong » dung cong
anh dung » anh dong, sach dung, ung dung
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - ((anh dung) or (anh huong)) luan dang cong dan ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - ((anh dung) OR (anh huong)) luan dang cong dan ((toan cao) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - ((anh dung) or (anh huong)) luan dang cong dan ((toan cao) OR (toan tap))*".