Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den cac chan snippets" » "den cam chan snippets", "den cac nhan snippets", "den cac chat snippets", "dien cac chan snippets", "dan cac chan snippets", "de cac chan 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: (((("den cac chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den cac chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den cac chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den cac chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.