Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat cuu hoan snippets" » "hat luu hoang snippets", "hat cuu van snippets", "hat cuu khoa snippets", "hat cu hoan snippets", "hat cua hoan snippets", "hat luu hoan 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: (((("hat cuu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat cuu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat cuu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat cuu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.