Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi khao co snippets" » "thi thao co snippets", "thi hao co snippets", "thi khan co snippets", "thi khac co snippets", "thi khao cuu snippets", "thi khao noi 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 khao co 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 khao co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi khao co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi khao co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.