Perhaps you should try some spelling variations:
thien van » thi van
dang xay » dang van, van xay
dao cua » dai cua, day cua, dan cua
va hanh » van hanh, va thanh, va danh
va lanh » va lang, va danh, va anh
cao duc » dao duc, cao suc, giao duc
thu sac » thu sach, thu san, thu xac
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
cua te » cua tu

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

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