Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
danh vinh » dang vinh, anh vinh, thanh vinh
vinh cuu » dinh cuu, sinh cua, dinh cu
vu cham » va cham, vu kham, tu cham
va danh » va dinh, va dan, va hanh
cuu tre » cua tre, cau tren, cau treo
y lang » o lang, tay lang, yen lang
_ lang » o lang, _ land
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: thuoc sach ((y lang) OR (_ lang)) xa hoi. hieu ((ve cam) or (vu cham)) duc va danh vinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((y lang) OR (_ lang)) xa hoi. hieu ((ve cam) OR (vu cham)) duc va danh vinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((y lang) OR (_ lang)) xa hoi. hieu ((ve cam) or (vu cham)) duc va danh vinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((y lang) OR (_ lang)) xa hoi. hieu ((ve cam) or (vu cham)) duc va danh vinh cuu tre*.