Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
cac thuc » cach thuc, cac thu, can thuc
viec cac » vien cac, viec cua, viec lam
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
mang xa » mang may, dang xay, mang cua
vi cua » vai cua, di cua
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) or (thuat toan)) ky ((mang xa) or (lang xa)) hoi. hieu viec cac thuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat toan)) ky ((mang xa) OR (lang xa)) hoi. hieu viec cac thuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat toan)) ky ((mang xa) or (lang xa)) hoi. hieu viec cac thuc van hanh vi cua te*.