Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cham loc » cham soc, chon loc, hau loc
dang cay » dang xay, dang ca, dang cac
cay phoi » cap phoi, tay hoi, cay cho
vai cua » dai cua, hai cua, lai cua
anh vai » anh va, anh bai, anh van
van anh » van thanh, tuan anh, van minh
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
cham o » cham soc
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) y dang cay phoi. hieu ve ((cham loc) or (cham o)) van anh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y dang cay phoi. hieu ve ((cham loc) OR (cham o)) van anh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) y dang cay phoi. hieu ve ((cham loc) or (cham o)) van anh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) y dang cay phoi. hieu ve ((cham loc) or (cham o)) van anh vai cua tre*.