Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tai » thanh hai, thanh toan, doanh tai
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, lieu va
tang ma » mang may, tang van
nam luc » nang luc, nhan luc, nam thuc
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (sac ky)) tang ma hoi. hieu van nam luc va ((thanh van) or (thanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac ky)) tang ma hoi. hieu van nam luc va ((thanh van) OR (thanh tai)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac ky)) tang ma hoi. hieu van nam luc va ((thanh van) or (thanh tai)) cua triet*.