Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"que han cho snippets" » "que van cho snippets", "quen hanh cho snippets", "tue nhan cho snippets", "que hang cho snippets", "que han che snippets", "que san cho 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: (((("que han cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("que han cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( que han cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("que han cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.