Perhaps you should try some spelling variations:
phuong doi » huong doi, phuong dong, phuong doan
va phuong » va thuong, cac phuong
chat tuc » luat tuc, chat huu, chat cua
chat xuc » chat huu, cam xuc, chao xu
doi cua » dai cua, hoi cua
bo sach » co sach, hoc sach
hieu va » lieu va
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
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: bo sach ky nang x hoi. ((hieu va) or (hieu qua)) ((chat tuc) OR (chat xuc)) va phuong doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang x hoi. ((hieu va) OR (hieu qua)) ((chat tuc) OR (chat xuc)) va phuong doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo sach ky nang x hoi. ((hieu va) or (hieu qua)) ((chat tuc) OR (chat xuc)) va phuong doi cua tre".
• Adding a wildcard symbol may retrieve word variants: bo sach ky nang x hoi. ((hieu va) or (hieu qua)) ((chat tuc) OR (chat xuc)) va phuong doi cua tre*.