Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cam thuc » am thuc, nam thuc, cam thu
danh de » hanh de, dan de, dang de
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
ve cam » ve cham, ve cac, va cam
te san » te ban, ke san, tu san
te sac » te sach, te cac

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) OR (te san)) ((ky lang) or (ky dang)) xa hoi. hieu ve cam thuc va danh de ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ((ky lang) OR (ky dang)) xa hoi. hieu ve cam thuc va danh de ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te san)) ((ky lang) or (ky dang)) xa hoi. hieu ve cam thuc va danh de ve triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te san)) ((ky lang) or (ky dang)) xa hoi. hieu ve cam thuc va danh de ve triet*.