Perhaps you should try some spelling variations:
tu sang » thu sang, tu san, tu lang
va hanh » van hanh, va thanh, va danh
vu chat » va chat, ve chat, du chat
vu chao » vu cao, vu cham, vu cho
sang ky » sang kyo, dang ky, tang ky
lai roi » loi roi
lai hoi » dai hoi, lai hoa, mai hoi
ky dang » ky nang, ky danh
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sang ky dang ((lai hoi) or (lai roi)). hieu ((vu chao) or (vu chat)) tu va hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky dang ((lai hoi) OR (lai roi)). hieu ((vu chao) OR (vu chat)) tu va hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sang ky dang ((lai hoi) or (lai roi)). hieu ((vu chao) or (vu chat)) tu va hanh vi cua tu*.