Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
cham duc » pham duc, cham soc, pham duy
hanh vai » hanh va, hanh tai, hanh van
cua nuoc » cua quoc, cua nguoi, cua thuoc
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
su sac » su sach, su cac, su xac
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: su sac ky dang ha noi. ((hieu van) or (thien van)) cham duc va ((hanh vai) OR (hanh vi)) cua nuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky dang ha noi. ((hieu van) OR (thien van)) cham duc va ((hanh vai) OR (hanh vi)) cua nuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky dang ha noi. ((hieu van) or (thien van)) cham duc va ((hanh vai) OR (hanh vi)) cua nuoc".
• Adding a wildcard symbol may retrieve word variants: su sac ky dang ha noi. ((hieu van) or (thien van)) cham duc va ((hanh vai) OR (hanh vi)) cua nuoc*.