Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hong mat so snippets" » "phong mat so snippets", "duong mat so snippets", "hoang mai so snippets", "hong mot so snippets", "hong mat co 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: (((("hong mat 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: (((("hong mat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong mat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong mat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.