Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
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 day
danh de » hanh de, dan de, dang de
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) OR (thuc dan)) danh de ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) danh de ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu ve cam ((thuc va) OR (thuc dan)) danh de ve triet*.