Perhaps you should try some spelling variations:
vat danh » va danh, van danh, luat danh
su viet » so viet
ve cham » va cham, ve chat, vu cham
nang xa » nang x, lang xa, mang xa
danh di » danh du, xanh di, danh dien
nang ma » tang ma, sang ma, nang cao
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cai » va cai, ve cac, ve tai
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 cai) or (ve cham)) thuc vat danh di su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang ma)) hoi. hieu ((ve cai) OR (ve cham)) thuc vat danh di su viet.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang ma)) hoi. hieu ((ve cai) or (ve cham)) thuc vat danh di su viet*.