Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cam thuc » am thuc, nam thuc, cam thu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va lang » va nang, hoa lang
lang va » lang van, hang va, lang ha
va cam » va cham, va cac, va cao
cua te » cua tu
tu sac » tu sach, tu san, tu bac

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

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