Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan ha hoc snippets" » "tang ha hoc snippets", "van ha hoc snippets", "tan ca hoc snippets", "tan hoa hoc snippets", "tan nha hoc snippets", "tan va hoc 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 ha hoc 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 ha hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan ha hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan ha hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.