Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
cam tuc » cam xuc, nam thuc, dam thuc
va tinh » may tinh
tinh da » tinh va, tinh gia, tinh lao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
cam tu » cam thu, nam tu, dam tu
da cua » dai cua, day cua, dan cua

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 y nang ma hoi. hieu qua ((cam tuc) OR (cam tu)) va tinh da cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. hieu qua ((cam tuc) OR (cam tu)) va tinh da cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu qua ((cam tuc) OR (cam tu)) va tinh da cua triet*.