Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va trien » va truyen, va thiet, va tuyen
sang tao » hang tai
cham luc » cham soc, nhan luc, cham cuu
qua cham » qua hai, qua cac, va cham
sach ty » sach y, sach tu, sach thu
sang ma » tang ma, nang ma, mang may
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va

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 ty ((sang ma) OR (sang tao)) hoi. hieu qua cham luc va hanh vi ((cua triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((sang ma) OR (sang tao)) hoi. hieu qua cham luc va hanh vi ((cua triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((sang ma) OR (sang tao)) hoi. hieu qua cham luc va hanh vi ((cua triet) or (va trien))".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((sang ma) OR (sang tao)) hoi. hieu qua cham luc va hanh vi ((cua triet) or (va trien))*.