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