Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
ve triet » va trien, su triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
danh de » hanh de, dan de, danh di
dang de » dang deo, dung de, dang do
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

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