Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi canh toi snippets" » "thi hanh toi snippets", "thi anh toi snippets", "thi oanh toi snippets", "thi canh thin snippets", "thi hanh thoi snippets", "thi van toi 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 canh toi 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 canh toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi canh toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi canh toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.