Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don tu choi snippets" » "don su choi snippets", "don tu chi snippets", "don tu chon snippets", "dong tu choi snippets", "doan tu choi snippets", "mon tu choi 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 tu choi 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 tu choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don tu choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don tu choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.