Perhaps you should try some spelling variations:
duong manh » duong van
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh dung » thanh dung, anh dung, hanh dong
cong manh » cong danh, cong thanh, hoang manh
luan ban » luan van, luan san, luan han
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 - hanh dung luan ban ((cong manh) or (duong manh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh dung luan ban ((cong manh) OR (duong manh)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh dung luan ban ((cong manh) or (duong manh)) toan tap*.