Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"buc trinh he snippets" » "buc tranh he snippets", "qua trinh he snippets", "quy trinh he snippets", "buc trinh han snippets", "buc trinh hoa snippets", "buc trinh ky 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: (((("buc trinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("buc trinh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( buc trinh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("buc trinh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.