Perhaps you should try some spelling variations:
pham duy » pham duc
cua viet » ca viet, cua vat, cua dieu
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
lang van » dang van, tang van, hoang van
tu dang » thu dang, tu dong, su dang
duy ban » uy ban, duy van, duy can
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
dang ky » dang y, dan ky, dong ky
lang xa » lang ha, dang xay

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dang ky ((lang xa) or (lang van)) hoi. hieu ve pham duy ban hanh vai ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dang ky ((lang xa) OR (lang van)) hoi. hieu ve pham duy ban hanh vai ((cua viet) OR (hoa viet)).
• Adding a wildcard symbol may retrieve word variants: tu dang ky ((lang xa) or (lang van)) hoi. hieu ve pham duy ban hanh vai ((cua viet) or (hoa viet))*.