Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cong hai » cong thai, cong ha, hoang hai
sach ky » sac ky, sach y, sach ty
xanh di » danh di, vanh dai, xanh tai
cuc ban » cua ban, cac ban, cuu ban
te sach » toc sach
hieu va » lieu va, hieu qua
cam cuc » cam xuc, cham cuu, pham cuc
va cam » va cham, va cac, va cao
anh di » danh di, anh d, anh du

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 ((son hai) or (cong hai)). hieu va cam cuc ban ((anh di) OR (xanh di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((son hai) OR (cong hai)). hieu va cam cuc ban ((anh di) OR (xanh di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((son hai) or (cong hai)). hieu va cam cuc ban ((anh di) OR (xanh di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((son hai) or (cong hai)). hieu va cam cuc ban ((anh di) OR (xanh di)) cua triet*.