Perhaps you should try some spelling variations:
chat tuc » chat xuc, luat tuc, chat huu
cua viet » hoa viet, cua vat, cua dieu
tu sach » thu sach, su sach, te sach
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, hoa viet
tuc va » thuc va, truc va, tuc xa

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 (co sach)) ky nang xa hoi. hieu ve chat tuc va hanh vi ((cua viet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (co sach)) ky nang xa hoi. hieu ve chat tuc va hanh vi ((cua viet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (co sach)) ky nang xa hoi. hieu ve chat tuc va hanh vi ((cua viet) or (ca viet))*.