Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu va tong snippets" » "lieu va thong snippets", "lieu va tuong snippets", "lieu va trong snippets", "hieu va tong snippets", "dieu va tong 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 va tong 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 va tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu va tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu va tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.