Perhaps you should try some spelling variations:
"cong trinh luan van thi cong va tuong" » "cong trinh quan van thi cong va tuong", "cong trinh han van thi cong va tuong", "cong trinh toan van thi cong va tuong", "cong trinh luan van tai cong va tuong", "cong trinh luan van thien cong va tuong", "cong trinh luan van thi cong va thuong", "cong trinh luan van thi cong va thong", "cong trinh luan van thi cong xa truong", "cong trinh luan dan thi cong va tuong", "cong trinh luan tran thi cong va tuong", "cong trinh luan van thi dong va tuong", "cong trinh luan van thi cong tac tuong", "cong trinh luan van thi luong va tuong"
"cong trinh luat van thu cong ha luong" » "cong trinh luat dan thu cong ha luong", "cong trinh luat va thu cong ha luong", "cong trinh luat ban thu cong ha luong", "cong trinh luat van thu cong hai luong", "cong trinh luat van thu cong ham luong", "cong trinh luat van thu cong ha long", "cong trinh luat van thu cong hoa luong", "cong trinh luat van thu dong ha luong", "cong trinh luat van thu cong tac luong"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("cong trinh luan van thi cong va tuong") or ("cong trinh luat van thu cong ha luong"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cong trinh luan van thi cong va tuong") OR ("cong trinh luat van thu cong ha luong")).
• Removing quotes may allow a broader search: (( cong trinh luan van thi cong va tuong ) or ( cong trinh luat van thu cong ha luong )).
• Adding a wildcard symbol may retrieve word variants: (("cong trinh luan van thi cong va tuong") or ("cong trinh luat van thu cong ha luong"))*.