Perhaps you should try some spelling variations:
"thai trinh o snippets" » "thai tinh o snippets", "thi trinh o snippets", "thai thinh o snippets", "thai trinh do snippets", "thai trinh co snippets", "thai trinh mo snippets"
"python using java snippets" » "python using data 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: (((("thai trinh o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thai trinh o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thai trinh o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thai trinh o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.