Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
va triet » va thiet, va trien, cua triet
ban hanh » ban hang
nhan duc » nhan duoc, nhan luc, phan duc
ve triet » va trien, su triet
nang ma » tang ma, sang ma, nang cao
duc ban » duc tan, duc van, dua ban
nang xa » nang x, lang xa, mang xa
hieu ca » hieu cac, hieu cua, hieu va
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky ((nang xa) or (nang ma)) hoi. hieu ca nhan duc ban hanh vi ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky ((nang xa) OR (nang ma)) hoi. hieu ca nhan duc ban hanh vi ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: thuat san ky ((nang xa) or (nang ma)) hoi. hieu ca nhan duc ban hanh vi ((va triet) or (ve triet))*.