Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
van anh » van thanh, tuan anh, van minh
cham oc » cham soc, cham o, cham hoi
tu sach » thu sach, su sach, te sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
va cham » va chat, va tham
oc van » hoc van, luoc van, quoc van
anh vi » hanh vi, anh va, anh ve

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang ma) OR (sang ma)) hoi. lieu va cham oc van anh vi ((cau tren) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang ma) OR (sang ma)) hoi. lieu va cham oc van anh vi ((cau tren) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang ma) OR (sang ma)) hoi. lieu va cham oc van anh vi ((cau tren) OR (cua triet))*.