Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu bac cao snippets" » "thu ban cao snippets", "thu bao cao snippets", "tho bac cao snippets", "thu bac can snippets", "thu bac cau 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 bac cao 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 bac cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu bac cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu bac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.