Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
cua tre » cua te, cuu tre, cua triet
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
tang ha » lang ha, tang ma, trung ha
long ha » dong ha, cong ha, dong hoa
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua
tu sac » tu sach, tu cac, tu san

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((tang ha) OR (long ha)) hoi. hieu ve cam ((thuc dan) OR (duc va)) hanh di cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((tang ha) or (long ha)) hoi. hieu ve cam ((thuc dan) or (duc va)) hanh di cua tre*.