Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
thuc day » thuc dan
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua
x hoi » xa hoi, o hoi, x ho

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 (thuoc sach)) ky nang x hoi. hieu ve chat ((thuc day) or (thuc vat)) hanh vi luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ky nang x hoi. hieu ve chat ((thuc day) OR (thuc vat)) hanh vi luu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ky nang x hoi. hieu ve chat ((thuc day) or (thuc vat)) hanh vi luu tre*.