Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
cac duc » cac du, cao duc, cac dac
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
lap ky » tap ky, lap ly
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((lap ky) OR (lap ke)) nang x hoi. hieu van cac duc va danh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((lap ky) OR (lap ke)) nang x hoi. hieu van cac duc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat ((lap ky) OR (lap ke)) nang x hoi. hieu van cac duc va danh vi cua te*.