Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh thuoc » thanh phuoc, hanh thuoc, thanh thuong
hieu thien » hieu hien, chieu chien, dieu khien
thuoc va » thuc va, thuoc ma, thuong va
sach ty » sach tu, sach thu, xach tay
xanh di » danh di, vanh dai, xanh tai
va xanh » va danh, va hanh, va anh
nang xa » lang xa, nang ma, mang xa
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo ((sach ty) or (sach y)) ((nang xa) OR (nang x)) hoi. hieu thien thanh thuoc va xanh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo ((sach ty) OR (sach y)) ((nang xa) OR (nang x)) hoi. hieu thien thanh thuoc va xanh di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo ((sach ty) or (sach y)) ((nang xa) OR (nang x)) hoi. hieu thien thanh thuoc va xanh di cua tu*".