Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim hoang du snippets" » "kiem hoang du snippets", "tien hoang du snippets", "iii hoang du snippets", "tim hoang duy snippets", "tim hoang duc snippets", "tim hoang de 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: (((("tim hoang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tim hoang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim hoang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim hoang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.