Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
tu ban » thu ban, te ban
ban ky » van ky, dan ky
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky lang xa hoi. hieu qua cac duc van hanh vi cua vat~.
• Adding a wildcard symbol may retrieve word variants: tu ban ky lang xa hoi. hieu qua cac duc van hanh vi cua vat*.