Perhaps you should try some spelling variations:
nhan luc » nang luc
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
va nhan » van nhan, ca nhan, va phan
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
mai doi » moi doi, mai hoi, mai khoi
bai ky » ban ky, sai ky, bac ky
luc va » duc va, tuc va, loc va
vi cuu » vi luu, vinh cuu
tu bai » tu ban, tu bat, te bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu bai ky nang ((ma hoa) or (((mai doi) or (dai hoi)))). hieu va nhan luc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu bai ky nang ((ma hoa) OR (((mai doi) OR (dai hoi)))). hieu va nhan luc va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu bai ky nang ((ma hoa) or (((mai doi) or (dai hoi)))). hieu va nhan luc va hanh vi cuu tre*.