Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh dai » hanh tai, hanh dao, vanh dai
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
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: te sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cam) or (va cham)) thuc va hanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cam) OR (va cham)) thuc va hanh dai cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang ((x hoi) OR (o hoi)). hieu ((ve cam) or (va cham)) thuc va hanh dai cua viet*".