Perhaps you should try some spelling variations:
hanh thuoc » thanh phuoc, hanh phuc, dang thuoc
thien van » thi van
ban thanh » ban hanh, ban hang
thuoc ban » thuoc tan, thuoc dang, thu ban
van hanh » van thanh, ban hanh, van anh
thanh ve » hanh ve, thanh va, thanh vien
cua tre » cuu tre, cua triet, dua tren
sach uu » sach luu, sach tu, sach xu
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
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: su ((sach uu) or (cach tu)) nang xa hoi. thien van hanh thuoc ban thanh ve ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach uu) OR (cach tu)) nang xa hoi. thien van hanh thuoc ban thanh ve ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach uu) or (cach tu)) nang xa hoi. thien van hanh thuoc ban thanh ve ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: su ((sach uu) or (cach tu)) nang xa hoi. thien van hanh thuoc ban thanh ve ((cua tre) OR (cua te))*.