Perhaps you should try some spelling variations:
nang dieu » dang dieu, sang dieu, bang dieu
dieu cua » dieu tra
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
thuc va » thuc dan, thuc day
va cham » va chat, va tham
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cai » va cai, ve cac, ve tai
cua te » cua tu

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 lang xa hoi. hieu ((ve cai) or (va cham)) ((thuc vat) or (thuc va)) nang dieu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((ve cai) OR (va cham)) ((thuc vat) OR (thuc va)) nang dieu cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu ((ve cai) or (va cham)) ((thuc vat) or (thuc va)) nang dieu cua te*.