Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thoi khac so snippets" » "tho nhac so snippets", "hoc khac so snippets", "khoa khac so snippets", "thoi khac son snippets", "thoi khac do snippets", "thoi khac 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: (((("thoi khac 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: (((("thoi khac so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thoi khac so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thoi khac so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.