Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
lang van » dang van, tang van, hoang van
duc ban » duc tan, duc van, dua ban
dong ky » duong ky, hong ky, dong y
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
va cham » va chat, va tham

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dong ky ((lang xa) or (lang van)) hoi. hieu va cham duc ban hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dong ky ((lang xa) OR (lang van)) hoi. hieu va cham duc ban hanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu dong ky ((lang xa) or (lang van)) hoi. hieu va cham duc ban hanh vi ((cua triet) or (su triet))*.