Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu tinh co snippets" » "trieu tinh co snippets", "diep tinh co snippets", "bien tinh co snippets", "lieu trinh co snippets", "lieu tinh cao snippets", "lieu tinh cho 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: (((("lieu tinh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu tinh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu tinh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu tinh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.