Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
anh thai » anh thi, anh tai, tranh thai
tu sach » thu sach, su sach, te sach
qua ban » cua ban, qua quan
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, mua ban
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam

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 ky dang cay phoi. hieu ve cam ((dua ban) OR (qua ban)) ((anh thai) or (nhanh thai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang cay phoi. hieu ve cam ((dua ban) OR (qua ban)) ((anh thai) OR (nhanh thai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang cay phoi. hieu ve cam ((dua ban) OR (qua ban)) ((anh thai) or (nhanh thai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang cay phoi. hieu ve cam ((dua ban) OR (qua ban)) ((anh thai) or (nhanh thai)) cua tre*.