Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong le bo snippets" » "duong ve bo snippets", "vuong le bo snippets", "dung le bo snippets", "duong le bon snippets", "duong le co snippets", "duong de bo 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: (((("duong le bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong le bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong le bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong le bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.