Perhaps you should try some spelling variations:
dieu kien » dieu khien, dien bien
kien cac » vien cac, dien cac, kien mac
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cac dac » cac dan, cac dai, cac bac
bang ky » dang ky, ban ky, bang ly
lang xa » lang ha, dang xay, lang van
tang ky » dang ky, trong ky, tang khu
cuu tre » cau tren, cau treo
dac va » duc va, day va, dat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((bang ky) or (tang ky)) lang xa hoi. dieu kien cac dac va hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((bang ky) OR (tang ky)) lang xa hoi. dieu kien cac dac va hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: so ((bang ky) or (tang ky)) lang xa hoi. dieu kien cac dac va hanh vi ((cua tre) or (cuu tre))*.