Perhaps you should try some spelling variations:
day nhanh » duy nhanh, dac nhan, day manh
day thanh » dao thanh, dat thanh, da thanh
cam thuc » am thuc, nam thuc, cam thu
hieu ve » hieu va, hieu van
sach ty » sach tu, sach thu, xach tay
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach y) or (sach ty)) nang x hoi. hieu ve cam thuc ((day thanh) or (day nhanh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach y) OR (sach ty)) nang x hoi. hieu ve cam thuc ((day thanh) OR (day nhanh)) di cua tu.
• Adding a wildcard symbol may retrieve word variants: vu ((sach y) or (sach ty)) nang x hoi. hieu ve cam thuc ((day thanh) or (day nhanh)) di cua tu*.