Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu viec » nhieu viec, hieu ve, sieu viet
sang mai » sang ma, sang tai, lang mai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
cac duy » cac du, cac quy, cach dua
duy van » duy vat, dung van
hanh di » hanh vi, hanh de, hang di
y sang » _ sang, duy sang
di cua » dai cua, doi cua, de 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 y sang mai hoi. ((hieu viec) or (thieu nien)) cac duy van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y sang mai hoi. ((hieu viec) OR (thieu nien)) cac duy van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y sang mai hoi. ((hieu viec) or (thieu nien)) cac duy van hanh di cua te*.