Perhaps you should try some spelling variations:
tang luan » dung luan
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu sang » chu bang, thu sang, chieu sang
tang cua » mang cua, hang cua, thong cua
cong tac » cong ty
tren cau » tren ca, tren tau, trinh cau
tren cay » trien cay, tren may, ten cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sang - anh ((tang cua) OR (tang luan)) dung cong tac ((tren cau) or (tren cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sang - anh ((tang cua) OR (tang luan)) dung cong tac ((tren cau) OR (tren cay)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sang - anh ((tang cua) OR (tang luan)) dung cong tac ((tren cau) or (tren cay))".
• Adding a wildcard symbol may retrieve word variants: theo chu sang - anh ((tang cua) OR (tang luan)) dung cong tac ((tren cau) or (tren cay))*.