Perhaps you should try some spelling variations:
thu sac » thu sach, thu san, thu xac
hieu va » lieu va, hieu qua
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam duc » cao duc, pham duc, nam duoc
cua tuc » cua duc, cua tu, cua thuoc
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
vi cua » vai cua, di cua

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 lang xa hoi. ((hieu ve) or (hieu va)) ((cam duc) OR (cam xuc)) va danh vi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky lang xa hoi. ((hieu ve) OR (hieu va)) ((cam duc) OR (cam xuc)) va danh vi cua tuc*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky lang xa hoi. ((hieu ve) or (hieu va)) ((cam duc) OR (cam xuc)) va danh vi cua tuc*".