Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ho hap chieu snippets" » "ho thap chieu snippets", "ho hai chieu snippets", "ho nhat chieu snippets", "hoi nhap chieu snippets", "hoc phap chieu 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: (((("ho hap chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ho hap chieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ho hap chieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ho hap chieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.