Perhaps you should try some spelling variations:
thuat nganh » thuat lanh, thuat canh, luat nganh
va thanh » gia thanh, ban thanh, va tinh
nganh ky » nganh y, nganh xay, hanh ky
va hanh » van hanh, va danh, ban hanh
hieu ve » hieu va, hieu van
di cua » dai cua, doi cua, de cua
ve cao » va cao, ve bao, ve cac
cua te » cua tu
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat nganh ky nang ((x hoi) OR (o hoi)). hieu ve cao su ((va hanh) or (va thanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat nganh ky nang ((x hoi) OR (o hoi)). hieu ve cao su ((va hanh) OR (va thanh)) di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat nganh ky nang ((x hoi) OR (o hoi)). hieu ve cao su ((va hanh) or (va thanh)) di cua te".
• Adding a wildcard symbol may retrieve word variants: thuat nganh ky nang ((x hoi) OR (o hoi)). hieu ve cao su ((va hanh) or (va thanh)) di cua te*.