Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cham tuc » nham thuc, pham thuc, tham thuc
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau treo
tu sach » thu sach, su sach, te sach
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ma hoi. hieu ve cham tuc va ((thanh vi) or (thanh ve)) ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ve cham tuc va ((thanh vi) OR (thanh ve)) ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ve cham tuc va ((thanh vi) or (thanh ve)) ((cuu tre) or (cau tren))*.