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