Perhaps you should try some spelling variations:
dang tai » dang thai, dung tai, hang tai
chat duc » chat xuc, chat doc, chet duoc
thu san » thuy san, thu ban, phu san
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tuc » cua duc, cua thuoc, luat tuc
hieu ve » hieu van
tai hoi » tai khoi, dai hoi, tai hai
ky dang » ky nang, ky danh
san ky » sang ky, van ky, dan ky
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu san ky dang tai hoi. ((hieu ve) or (hieu va)) chat duc va hanh vi ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu san ky dang tai hoi. ((hieu ve) OR (hieu va)) chat duc va hanh vi ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky dang tai hoi. ((hieu ve) or (hieu va)) chat duc va hanh vi ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: thu san ky dang tai hoi. ((hieu ve) or (hieu va)) chat duc va hanh vi ((cua tu) OR (cua tuc))*.