Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
cua triet » cua viet, su triet, va triet
hanh vai » hanh va, hanh tai, hanh van
danh xa » danh ca, dinh xa, dan xa
canh xa » canh va, canh tac, canh tay
hieu ve » hieu va, hieu van
cac thu » cach thuc, cac thoi
thu van » thuc van, thuy van, tu van
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sac ky ((danh xa) or (canh xa)) hoi. hieu ve cac thu van ((hanh vai) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky ((danh xa) OR (canh xa)) hoi. hieu ve cac thu van ((hanh vai) OR (hanh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sac ky ((danh xa) or (canh xa)) hoi. hieu ve cac thu van ((hanh vai) or (hanh vi)) cua triet*.