Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
gian cua » gian xu, ban cua
cua viet » ca viet, hoa viet, cua vat
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) OR (hoc sach)) ty xang xa hoi. hieu ve cam ((xuc va) or (duc va)) thanh gian cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ty xang xa hoi. hieu ve cam ((xuc va) OR (duc va)) thanh gian cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) ty xang xa hoi. hieu ve cam ((xuc va) or (duc va)) thanh gian cua viet".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) ty xang xa hoi. hieu ve cam ((xuc va) or (duc va)) thanh gian cua viet*.