Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri viet doi snippets" » "thi viet doi snippets", "tai viet doi snippets", "trien viet doi snippets", "tri viet duoi snippets", "tri viet voi snippets", "tri nhiet doi 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: (((("tri viet doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri viet doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri viet doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri viet doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.