Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
than thuc » thuan thuc, nhan thuc, toan thuc
qua than » qua thanh, qua phan, qua tan
thuc ban » thuoc ban, thuc dan, thu ban
hanh vai » hanh vi, hanh tai, hanh van
ky mang » ky nang, ke mang, ky tang
ky dang » ky nang, ky danh
may hoi » may thoi, tay hoi, mai hoi
hanh va » hang va, hanh vi
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky mang) OR (ky dang)) may hoi. hieu qua than thuc ban ((hanh vai) or (hanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky mang) OR (ky dang)) may hoi. hieu qua than thuc ban ((hanh vai) OR (hanh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky mang) OR (ky dang)) may hoi. hieu qua than thuc ban ((hanh vai) or (hanh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky mang) OR (ky dang)) may hoi. hieu qua than thuc ban ((hanh vai) or (hanh va)) cua triet*.