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