Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tong tai so snippets" » "thong tai so snippets", "trong tai so snippets", "dong tai so snippets", "tong tai sao snippets", "tong dai so snippets", "tong tai co 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: (((("tong tai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tong tai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong tai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong tai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.