Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
nang hoa » nang hoat, hang hoa, nang hoc
va thanh » gia thanh, ban thanh, va tinh
va triet » va thiet, cua triet, va viet
ve triet » su triet
va trien » va truyen, va thiet, va tuyen
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu va » lieu va, hieu qua
cac hoc » cach hoc, cac hop, bac hoc
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky nang hoa hoi. hieu va cac hoc va thanh vai ((va triet) or (((ve triet) or (va trien))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky nang hoa hoi. hieu va cac hoc va thanh vai ((va triet) OR (((ve triet) OR (va trien)))).
• Adding a wildcard symbol may retrieve word variants: su xac ky nang hoa hoi. hieu va cac hoc va thanh vai ((va triet) or (((ve triet) or (va trien))))*.