Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"du thanh cha snippets" » "du thanh ha snippets", "du thanh nha snippets", "du thanh phan snippets", "duc thanh cha snippets", "de thanh cha snippets", "du hanh cha 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: (((("du thanh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("du thanh cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( du thanh cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("du thanh cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.