Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat luc » chat xuc, nhan luc, chat huu
chat lua » chat cua, chat va, chat huu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
tinh le » thinh le, trinh le, dinh le
le cua » ly 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: te sach ky nang x hoi. hieu qua ((chat luc) or (chat lua)) va tinh le cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu qua ((chat luc) OR (chat lua)) va tinh le cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu qua ((chat luc) or (chat lua)) va tinh le cua triet*.