Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cua viet » ca viet, hoa viet, cua vat
luat tuc » luat thue
va thanh » gia thanh, ban thanh, va tinh
chat tuc » chat xuc, chat huu, chat cua
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
co sach » bo sach, cuon sach, hoc sach
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (co sach)) ky nang xa hoi. hieu ve ((chat tuc) OR (luat tuc)) va thanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) ky nang xa hoi. hieu ve ((chat tuc) OR (luat tuc)) va thanh vai cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (co sach)) ky nang xa hoi. hieu ve ((chat tuc) OR (luat tuc)) va thanh vai cua viet*".