Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet lao can snippets" » "viet giao can snippets", "viet nam can snippets", "viet ha can snippets", "viet lao cai snippets", "viet lao ban snippets", "viet lao tan 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: (((("viet lao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet lao can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet lao can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet lao can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.