Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
ban nhanh » ban hanh, ban thanh, ban nhan
dau tren » dau tien, dat tren, dau tieng
thai dau » thau dau, thai dac, thi dau
cay phoi » cap phoi, tay hoi, cay cho
ve cham » va cham, ve chat, vu cham
duc ban » duc tan, duc van, dua ban
tu sach » thu sach, su sach, te sach
ky dang » ky nang, ky danh
ty dang » ty xang, ty hang, ty dong
ve cam » ve cac, va cam, ve cai

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 ((ty dang) or (ky dang)) cay phoi. hieu ((ve cam) or (ve cham)) duc ban nhanh thai dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty dang) OR (ky dang)) cay phoi. hieu ((ve cam) OR (ve cham)) duc ban nhanh thai dau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty dang) or (ky dang)) cay phoi. hieu ((ve cam) or (ve cham)) duc ban nhanh thai dau tren*.