Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
du chat » duoc chat, dung chat, doc chat
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
vu chat » va chat, ve chat, vu cham
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua
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: ((tu sach) or (thu sach)) ky nang x hoi. hieu ((vu chat) OR (du chat)) luc va hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. hieu ((vu chat) OR (du chat)) luc va hanh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x hoi. hieu ((vu chat) OR (du chat)) luc va hanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x hoi. hieu ((vu chat) OR (du chat)) luc va hanh de cua tre*.