Perhaps you should try some spelling variations:
dung land » dung luan, dung lam, dung san
hieu soat » hieu suat, hieu hoat, hieu luat
tien soan » bien soan, tien hoang, thien toan
land van » lang van, lan van, luan van
van hieu » cao hieu
dat san » dac san, dat hang, dat luan
dam san » lam san, dam van, dac san

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung land van hieu soat ) or ( tin dung ((dat san) OR (dam san)) tien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung land van hieu soat ) OR ( tin dung ((dat san) OR (dam san)) tien soan )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tin dung land van hieu soat ) or ( tin dung ((dat san) OR (dam san)) tien soan ))".
• Adding a wildcard symbol may retrieve word variants: (( tin dung land van hieu soat ) or ( tin dung ((dat san) OR (dam san)) tien soan ))*.