Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hoan che snippets" » "thi hoan che snippets", "thu hoach che snippets", "thu ha che snippets", "thu han che snippets", "thu hoan thue snippets", "thu hoang chi 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: (((("thu hoan che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hoan che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hoan che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hoan che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.