Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van rung cho snippets" » "van trung cho snippets", "van dung cho snippets", "van hung cho snippets", "van rong cho snippets", "van vung cho 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: (((("van rung cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van rung cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van rung cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van rung cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.