Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, nhung cong
khien tinh » thien tinh, khien thich, dien tinh
hung vuong » hoang vuong
bien tinh » bi tinh, yen tinh, diep tinh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((khien tinh) or (bien tinh)) - anh tang luan ((nhung tuong) OR (hung vuong)) tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((khien tinh) OR (bien tinh)) - anh tang luan ((nhung tuong) OR (hung vuong)) tinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((khien tinh) or (bien tinh)) - anh tang luan ((nhung tuong) OR (hung vuong)) tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((khien tinh) or (bien tinh)) - anh tang luan ((nhung tuong) OR (hung vuong)) tinh toan tap*.