Perhaps you should try some spelling variations:
thien van » thi van
lam duoc » nam duoc, luat duoc, lam thuoc
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
lam duc » pham duc, nam duoc, lam dung

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 ty xang xa hoi. thien van ((lam duc) OR (lam duoc)) van hanh ((bai ca) or (lai chau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. thien van ((lam duc) OR (lam duoc)) van hanh ((bai ca) OR (lai chau)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. thien van ((lam duc) OR (lam duoc)) van hanh ((bai ca) or (lai chau)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. thien van ((lam duc) OR (lam duoc)) van hanh ((bai ca) or (lai chau)) tre*.