Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan duoc do snippets" » "tao duoc do snippets", "tran duc do snippets", "da duoc do snippets", "tan duoc dao snippets", "tan duoc co snippets", "tan duoc vo 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 duoc do 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 duoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan duoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan duoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.