Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao cuu hoan snippets" » "cao luu hoang snippets", "cao cuu van snippets", "cao cuu khoa snippets", "cap cuu hoan snippets", "cao chu hoan snippets", "cham cuu hoan 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: (((("cao cuu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao cuu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao cuu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao cuu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.