Perhaps you should try some spelling variations:
tieu danh » dieu danh, tiep danh, thien danh
luong xay » luong xuan, luong va, luong tai
dung cong » dung trong
lang xay » dang xay, lang xa, lang xuan
cong san » cong tac
san tran » tan tran, ban tran, dang tran
tran van » luan van

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 danh - nhanh ((lang xay) OR (luong xay)) dung cong san tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu danh - nhanh ((lang xay) OR (luong xay)) dung cong san tran van".
• Adding a wildcard symbol may retrieve word variants: theo tieu danh - nhanh ((lang xay) OR (luong xay)) dung cong san tran van*.