Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
chua tri » chu tri, chua trieu, chua tivi
tang van » dang van, hoang van, trong van
vat chua » va chua, vat cua, vat khoa
va trinh » van trinh, va tinh, lap trinh
cam thuc » am thuc, nam thuc, cam thu
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tang ma » mang may
thuc va » thuc vat, thuc dan, thuc day
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
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: su sach ky ((nang xa) or (((tang ma) or (tang van)))) hoi. hieu ve cam thuc va trinh vat chua tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (((tang ma) OR (tang van)))) hoi. hieu ve cam thuc va trinh vat chua tri.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (((tang ma) or (tang van)))) hoi. hieu ve cam thuc va trinh vat chua tri*.