Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ve cham » va cham, ve chat, vu cham
nang xa » nang x, lang xa, mang xa
danh di » danh du, xanh di, danh dien
va danh » va dinh, va dan, va hanh
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cac, va cam, ve cai
di su » doi su, ki su, da su

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