Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh van » doan van, doanh va, doanh ban
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, va danh
van cua » vang cua, ban cua, dan cua
cau tuc » cau tu, cau luc, cau phuc
sach ky » sac ky, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach y)) nang ma hoi. hieu van ((cau tuc) OR (cau truc)) va doanh van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang ma hoi. hieu van ((cau tuc) OR (cau truc)) va doanh van cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) nang ma hoi. hieu van ((cau tuc) OR (cau truc)) va doanh van cua triet*".