Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho viec con snippets" » "cuoi viec con snippets", "co viet con snippets", "tho viet con snippets", "cho viec cong snippets", "cho viec cuoi snippets", "cho viec cua 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: (((("cho viec con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho viec con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho viec con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho viec con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.