Perhaps you should try some spelling variations:
dieu kien » dieu khien, dien bien
hanh thai » nhanh thai, hinh thai, hanh tai
thai cao » thoai cac, thuat cao, toan cao
kien cac » vien cac, dien cac, kien mac
van hanh » van thanh, ban hanh, van anh
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. dieu kien cac duc van hanh 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. dieu kien cac duc van hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((tai cao) or (thai cao)) tang xa hoi. dieu kien cac duc van hanh thai cua tre*.