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

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 (tai sao))) or (thai cao)) tang xa hoi. dieu hien cac duc van nhanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((tai cao) OR (tai sao))) OR (thai cao)) tang xa hoi. dieu hien cac duc van nhanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((((tai cao) OR (tai sao))) or (thai cao)) tang xa hoi. dieu hien cac duc van nhanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((((tai cao) OR (tai sao))) or (thai cao)) tang xa hoi. dieu hien cac duc van nhanh thai cua tre*.