Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi luu dong snippets" » "thi tu dong snippets", "thi lao dong snippets", "thi huy dong snippets", "thi huu dong snippets", "thi buu dong snippets", "thi lu dong 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: (((("thi luu dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi luu dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi luu dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi luu dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.