Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc xa hoc snippets" » "tuc xa hoc snippets", "truc va hoc snippets", "truoc xay hoc snippets", "truc xa hoi snippets", "truc xa hoa 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: (((("truc xa 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: (((("truc xa hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc xa hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc xa hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.