Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi canh du snippets" » "doi hanh du snippets", "boi canh du snippets", "do canh du snippets", "doi anh du snippets", "doi danh du snippets", "doi danh dau 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: (((("doi canh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi canh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi canh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi canh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.