Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
nang ro » nang co, nang ho, nang ra
va hanh » van hanh, va thanh, va danh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
nang o » nang co, nang ho, nang x
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((nang o) OR (nang ro)) hai. hieu ((ve cam) or (ve cac)) duc va hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((nang o) OR (nang ro)) hai. hieu ((ve cam) OR (ve cac)) duc va hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((nang o) OR (nang ro)) hai. hieu ((ve cam) or (ve cac)) duc va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((nang o) OR (nang ro)) hai. hieu ((ve cam) or (ve cac)) duc va hanh dai cua te*.