Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi huong so snippets" » "thi phuong so snippets", "thi hong so snippets", "thu huong so snippets", "thi tuong so snippets", "thi muong so snippets", "thi huong 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: (((("thi huong 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: (((("thi huong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi huong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi huong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.