Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu dam chat snippets" » "thu lam chat snippets", "thu cao chat snippets", "thu van chat snippets", "thu nam chat snippets", "thu da chat snippets", "thu dac chat 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: (((("thu dam chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu dam chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu dam chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu dam chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.