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