Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thanh tai » thanh hai, thanh toan, doanh tai
cau tren » cu tren, dau tren, ca tren
sang tao » hang tai
thuc gia » thuc giai, thue gia, thuc dia
hieu va » lieu va, hieu qua
tai cau » tai cac, tai cao
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
dan ky » van ky
tu dan » tuc dan, tu ban, cu dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky ((sang tao) or (nang ma)) hoi. ((hieu ve) or (hieu va)) nham thuc gia thanh tai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky ((sang tao) OR (nang ma)) hoi. ((hieu ve) OR (hieu va)) nham thuc gia thanh tai cau tren.
• Adding a wildcard symbol may retrieve word variants: tu dan ky ((sang tao) or (nang ma)) hoi. ((hieu ve) or (hieu va)) nham thuc gia thanh tai cau tren*.