Perhaps you should try some spelling variations:
thieu nien » thien nhien
bieu hien » dieu hien, dieu khien, bien phien
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
hanh di » hanh vi, hanh de, hang di
dam van » dao van, nam van, pham van
cac dam » cac dan, cac dai, cao dam
ty sang » ty hang, duy sang, thu 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 ((ty sang) or (ty xang)) xa hoi. ((bieu hien) or (thieu nien)) cac dam van hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty sang) OR (ty xang)) xa hoi. ((bieu hien) OR (thieu nien)) cac dam van hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty sang) or (ty xang)) xa hoi. ((bieu hien) or (thieu nien)) cac dam van hanh di cua te*.