Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van ban
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
van anh » van thanh, tuan anh, van minh
vai cua » dai cua, hai cua, lai 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 ky ((nang ma) or (lang xa)) hoi. hieu qua cam xuc ((van hanh) OR (van anh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang ma) OR (lang xa)) hoi. hieu qua cam xuc ((van hanh) OR (van anh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang ma) or (lang xa)) hoi. hieu qua cam xuc ((van hanh) OR (van anh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang ma) or (lang xa)) hoi. hieu qua cam xuc ((van hanh) OR (van anh)) vai cua triet*.