Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bui tuong so snippets" » "bui trong so snippets", "bui duong so snippets", "bui huong so snippets", "bui tuong ho snippets", "bui truong son snippets", "bui cong so snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("bui tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bui tuong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bui tuong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bui tuong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.