Perhaps you should try some spelling variations:
danh dien » dinh dien, danh kien, danh lien
su triet » su viet, su tien, ve triet
vat danh » va danh, van danh, luat danh
ve chat » va chat, van chat
nang xa » nang x, lang xa, mang xa
dien su » dien tu, nien su, den su
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

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 chat)) thuc vat danh dien 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 cai) OR (ve chat)) thuc vat danh dien su triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang ma)) hoi. hieu ((ve cai) or (ve chat)) thuc vat danh dien su triet*.