Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
hanh tai » thanh tai, hang tai, han tai
cau tren » cu tren, dau tren, ca tren
mai khoa » tai khoa, may khoa, dai khoa
lang mai » lang dai, lang hai, lang man
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
cuu tre » cua tre, cau treo
te sach » toc sach

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 ky lang mai khoa. hieu ve cham truc va hanh tai ((cuu tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang mai khoa. hieu ve cham truc va hanh tai ((cuu tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ky lang mai khoa. hieu ve cham truc va hanh tai ((cuu tre) or (cau tren))*.