Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tich ho snippets" » "dong tinh ho snippets", "dong trinh ho snippets", "duong tinh ho snippets", "dong tich hop snippets", "dong tich pho snippets", "dong tich so 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: (((("dong tich 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: (((("dong tich ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tich ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tich ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.