Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
khang di » hang di, khang vi, khang voi
va khang » van khang, va hang, va khong
dang tay » dang xay, dung tay, dan tay
truc va » thuc va, thuc vat, trung va
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
tay hoi » tay ho, tao hoi, tay thai
ky dang » ky nang, ky danh
bo sach » co sach, hoc sach
di cua » dai cua, doi cua, de cua
ve cai » va cai, ve cac, ve tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (bo sach)) ky dang tay hoi. hieu ((ve cai) or (ve cham)) truc va khang di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (bo sach)) ky dang tay hoi. hieu ((ve cai) OR (ve cham)) truc va khang di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (bo sach)) ky dang tay hoi. hieu ((ve cai) or (ve cham)) truc va khang di cua tre*.