Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son quang cu snippets" » "don quang cu snippets", "soi quang cu snippets", "doan quang cu snippets", "son quang cua snippets", "son quang huy snippets", "son quang cao 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: (((("son quang cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son quang cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son quang cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son quang cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.