Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
su triet » su viet, su tien, ve triet
dang xay » dang van, van xay
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
tuc va » truc va, tuc xa, duc va
doi su » oi su, don su, voi su
su sac » su sach, su cac, su xac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((nang xa) or (dang xay)) hoi. hieu va cac ((tuc va) or (thuc va)) thanh doi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (dang xay)) hoi. hieu va cac ((tuc va) OR (thuc va)) thanh doi su triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (dang xay)) hoi. hieu va cac ((tuc va) or (thuc va)) thanh doi su triet*.