Perhaps you should try some spelling variations:
sach tin » sach tien, sach kinh, sach tren
tin mang » tin nang, ninh mang, tien manh
cua nuoc » cua quoc, cua thuoc, nha nuoc
te sach » toc sach
mang xa » lang xa, mang may, dang xay
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
anh tai » hanh tai, anh thai, vanh tai
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tin mang xa hoi. hieu ve cam ((xuc van) or (duc tan)) anh tai ((cua nuoc) OR (cua nguoi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tin mang xa hoi. hieu ve cam ((xuc van) OR (duc tan)) anh tai ((cua nuoc) OR (cua nguoi)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tin mang xa hoi. hieu ve cam ((xuc van) or (duc tan)) anh tai ((cua nuoc) OR (cua nguoi))".
• Adding a wildcard symbol may retrieve word variants: te sach tin mang xa hoi. hieu ve cam ((xuc van) or (duc tan)) anh tai ((cua nuoc) OR (cua nguoi))*.