Perhaps you should try some spelling variations:
thanh ki » thanh kim, thanh ky, thanh ke
thuc day » thuc dan, thuc vat
dang van » hoang van, hang va
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan
va cach » va cac
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
ky dang » ky nang, ky danh
te sach » toc sach
su tien » su kien, su hien, tu tieng
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (te sach)) ky dang van hoi. hieu va cach ((thuc va) or (thuc day)) thanh ki su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ky dang van hoi. hieu va cach ((thuc va) OR (thuc day)) thanh ki su tien.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ky dang van hoi. hieu va cach ((thuc va) or (thuc day)) thanh ki su tien*.