Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
sang tao » hang tai
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
tao hai » tao dai, tao tai, tai hai
sach ky » sach ty, sach kem, sach hay
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((((sach ky) or (sach y))) or (sac ky)) sang tao hai. hieu van cham thuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach y))) OR (sac ky)) sang tao hai. hieu van cham thuc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) or (sach y))) or (sac ky)) sang tao hai. hieu van cham thuc va danh vi cua te*.