Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec chao » viec cho, viec cua, viec bao
ban hanh » ban hang
chao su » cao su, chao xu, achat su
sach ky » sac ky, sach ty, sach kem
vi cua » vai cua, di cua
su ban » su bang, tu ban, vu ban
cua te » cua tu
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach y)) nang ((ma hoi) OR (xa hoi)). hieu viec chao su ban hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang ((ma hoi) OR (xa hoi)). hieu viec chao su ban hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach y)) nang ((ma hoi) OR (xa hoi)). hieu viec chao su ban hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) nang ((ma hoi) OR (xa hoi)). hieu viec chao su ban hanh vi cua te*.