Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan kinh can snippets" » "than kinh can snippets", "toan kinh can snippets", "tang kinh can snippets", "tan minh can snippets", "tan kinh van snippets", "tan tinh can 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: (((("tan kinh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan kinh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan kinh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan kinh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.