Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao cuu uoc snippets" » "cham cuu uoc snippets", "chao chu uoc snippets", "kho cua uoc snippets", "khao cuu duoc snippets", "khao cuu hoc snippets", "khao cu uoc 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: (((("khao cuu uoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khao cuu uoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao cuu uoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao cuu uoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.