Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
quan chu » quan khu, quan cau, quan che
cau treo » cau tren, cau trieu, cau truc
cau theo » cau thi, cau tao
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
chu va » chu van, chuc va, chua va
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: su sach ky nang x hoi. hieu qua quan chu va dinh va ((((cau treo) OR (cau theo))) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu qua quan chu va dinh va ((((cau treo) OR (cau theo))) OR (cau triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu qua quan chu va dinh va ((((cau treo) OR (cau theo))) or (cau triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu qua quan chu va dinh va ((((cau treo) OR (cau theo))) or (cau triet))*.