Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den ham cua snippets" » "den kham cua snippets", "yen ham cua snippets", "den cam cua snippets", "den pham cua snippets", "den hai cua snippets", "den nam cua 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 ham cua 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 ham cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den ham cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den ham cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.