Perhaps you should try some spelling variations:
thien van » thi van
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
duc vao » dua vao, duc dao, duc van
van cam » van nam, van lam, van cau
ty hang » ly hang, ty xang, thi hang
hang x » nang x, hoang xa, chang xu
ve cua » le cua, de cua, ve cum
te cua » tue cua, le cua, de cua
x hoi » xa hoi, o hoi, x ho

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 ty hang x hoi. thien van cam ((duc va) or (duc vao)) benh ((ve cua) OR (te cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang x hoi. thien van cam ((duc va) OR (duc vao)) benh ((ve cua) OR (te cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty hang x hoi. thien van cam ((duc va) or (duc vao)) benh ((ve cua) OR (te cua)) tre*".