Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don tinh toi snippets" » "doan tinh toi snippets", "dong tinh toi snippets", "den tinh toi snippets", "don tinh doi snippets", "don dinh toi snippets", "don tinh tri 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: (((("don tinh toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don tinh toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don tinh toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don tinh toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.