Perhaps you should try some spelling variations:
"bac cao long snippets" » "bac cao code snippets", "bac cao luong snippets", "bac cao cong snippets", "bac cao dong snippets", "bao cao long snippets", "bac can long snippets", "bac cau long snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("bac cao long snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("bac cao long snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( bac cao long snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("bac cao long snippets"))) or ("locating bug core snippets"))*.