Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nham thuc » nhan thuc, nam thuc, nham thu
day nhanh » day thanh, duy nhanh, dac nhan
duc manh » suc manh, duc anh, duc minh
ve nham » ve nha, ve cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, dua tren
su sach » so sach, vu sach
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x hoi. hieu ve nham thuc ((duc manh) or (day nhanh)) de ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ve nham thuc ((duc manh) OR (day nhanh)) de ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ve nham thuc ((duc manh) or (day nhanh)) de ((cua tre) or (cua triet))*.