Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
vu sach » vu bach, su sach, vu khach
va chat » van chat, va phat, cao chat
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
ca phoi » cap phoi, cay phoi, gap phoi
dang ca » dang cac, dan ca, hang ca
ky dang » ky nang, ky danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky dang ca phoi. hieu ((ve cham) or (va chat)) truc va hanh dai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky dang ca phoi. hieu ((ve cham) OR (va chat)) truc va hanh dai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang ca phoi. hieu ((ve cham) or (va chat)) truc va hanh dai ((cua tre) or (cuu tre))*.