Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
dang van » hoang van, hang va
hanh vai » hanh vi, hanh va, hanh tai
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
vai hoa » van hoa, va hoa, dai hoa
ky dang » ky nang, ky danh
van hoi » van hoa, van hoc, van hoe
tu sac » tu sach, tu cac, tu san
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: tu sac ky dang van hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) tham thuc ban hanh vai hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang van hoi. ((((hieu va) OR (hieu qua))) OR (lieu va)) tham thuc ban hanh vai hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang van hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) tham thuc ban hanh vai hoa viet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang van hoi. ((((hieu va) OR (hieu qua))) or (lieu va)) tham thuc ban hanh vai hoa viet*.