Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thanh lap » thanh san, phan lap, thanh hai
dua tren » dung tren
danh tao » doanh tai, danh giao, dao tao
tao khoi » tao hoi, thao khoa, lao khoa
cham tuc » nham thuc, pham thuc, cham soc
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ky danh » ky anh, ky dang
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
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: tu sach ky danh tao khoi. hieu va ((cham tuc) or (tham thuc)) va thanh lap ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky danh tao khoi. hieu va ((cham tuc) OR (tham thuc)) va thanh lap ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky danh tao khoi. hieu va ((cham tuc) or (tham thuc)) va thanh lap ((dua tren) or (cua te))*.