Perhaps you should try some spelling variations:
va thuat » ky thuat, va thuc, va thiet
ki thuat » ky thuat
danh lai » danh sai, gianh lai, dinh lam
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, va hanh
nuoi va » nguoi va, nuoc va, noi va
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty nang) or (ty hang)) cao hoi. lieu ((va thuat) OR (ki thuat)) nuoi va danh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty hang)) cao hoi. lieu ((va thuat) OR (ki thuat)) nuoi va danh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) or (ty hang)) cao hoi. lieu ((va thuat) OR (ki thuat)) nuoi va danh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ty hang)) cao hoi. lieu ((va thuat) OR (ki thuat)) nuoi va danh lai cua tre*.