Perhaps you should try some spelling variations:
thien van » thi van
thu sai » thu hai, thu tai, thu san
hieu ve » hieu va, hieu van
dao duc » giao duc, tao duoc
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
sai ky » sac ky
di cua » dai cua, doi cua, de cua
cua cu » cua chu, cua cau, cua su
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sai ky nang ((x hoi) OR (x ho)). ((hieu ve) or (thien van)) dao duc va danh di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sai ky nang ((x hoi) OR (x ho)). ((hieu ve) OR (thien van)) dao duc va danh di cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sai ky nang ((x hoi) OR (x ho)). ((hieu ve) or (thien van)) dao duc va danh di cua cu".
• Adding a wildcard symbol may retrieve word variants: thu sai ky nang ((x hoi) OR (x ho)). ((hieu ve) or (thien van)) dao duc va danh di cua cu*.