Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
van nhanh » van thanh, van hanh, van khanh
hieu vien » hieu hien, hieu viec, thieu nien
thai cao » thoai cac, thuat cao, toan cao
vien cac » vien bach, vien dai, vien da
thai cua » than cua, tai cuc, tri cua
tai cao » tao cao, tai sao, tai cac
tang xa » trang xa, tang ma, lang xa
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((tai cao) or (thai cao)) tang xa hoi. hieu vien cac duc van nhanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((tai cao) OR (thai cao)) tang xa hoi. hieu vien cac duc van nhanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((tai cao) or (thai cao)) tang xa hoi. hieu vien cac duc van nhanh thai cua tre*.