Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doanh mat » doanh bat, doanh xuat, doanh nhat
xay doanh » vay doanh, ly doanh, van doanh
nang mai » nang ma, nang tai, lang mai
mat cua » ma cua, manh cua, mang cua
thu xay » thau xay, thuc xay, tu xay
hieu ve » hieu va, hieu van
sach ky » sach y, sach kem, sach hay
sach ty » sach y, sach tu, sach thu
mai hoi » mai khoi, dai hoi, lai hoi
ve nam » he nam, va nam, le nam
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: te ((((sach ky) OR (sac ky))) or (sach ty)) nang mai hoi. hieu ve nam thu xay doanh mat cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((((sach ky) OR (sac ky))) OR (sach ty)) nang mai hoi. hieu ve nam thu xay doanh mat cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach ky) OR (sac ky))) or (sach ty)) nang mai hoi. hieu ve nam thu xay doanh mat cua triet".
• Adding a wildcard symbol may retrieve word variants: te ((((sach ky) OR (sac ky))) or (sach ty)) nang mai hoi. hieu ve nam thu xay doanh mat cua triet*.