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