Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
than cua » nhan cua, ban cua, gian cua
thai cua » tai cuc, tri cua, dai cua
van hanh » van thanh, ban hanh, van anh
duc van » duc va, duc tan, duc manh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
tu dat » tu bat
o lai » o lao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu dat) or (tu san)) ky nang o lai. hieu ve chat duc van hanh ((thai cua) or (than cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu dat) OR (tu san)) ky nang o lai. hieu ve chat duc van hanh ((thai cua) OR (than cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu dat) or (tu san)) ky nang o lai. hieu ve chat duc van hanh ((thai cua) or (than cua)) tre*.