Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
tinh doi » trinh doc, trinh do, tinh hoc
cua viet » ca viet, hoa viet, cua vat
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va tinh » may tinh
doi cua » dai cua, hoi cua
te sai » te tai, te bai, te lai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky lang xa hoi. ((hieu ve) or (hieu va)) cam thuc va tinh doi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky lang xa hoi. ((hieu ve) OR (hieu va)) cam thuc va tinh doi cua viet.
• Adding a wildcard symbol may retrieve word variants: te sai ky lang xa hoi. ((hieu ve) or (hieu va)) cam thuc va tinh doi cua viet*.