Perhaps you should try some spelling variations:
van nhanh » van thanh, van hanh, van nhan
van khanh » van thanh, van hanh, van anh
nang hoc » nang doc, nang luc, dong hoc
chat xuc » chat huu, chao xu, chat cua
hoc bai » hoc dai, hoc giai
hieu ve » hieu va, hieu van
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: tu cac ky nang hoc bai. hieu ve ((chat xuc) OR (cam xuc)) ((van nhanh) or (van khanh)) tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang hoc bai. hieu ve ((chat xuc) OR (cam xuc)) ((van nhanh) OR (van khanh)) tri cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang hoc bai. hieu ve ((chat xuc) OR (cam xuc)) ((van nhanh) or (van khanh)) tri cua tre*".