Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » thuat sach, thuoc sach, thu hoach
tang mai » tang ma, tang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
tieu su » thieu so
hanh ca » hanh cac, hanh cat, hanh cua
va hanh » van hanh, va thanh, va danh
tu sach » su sach, te sach, tu cach
ty tang » tay tang, ty xang, ty hang
hieu su » hieu sau, hieu so, hieu suat
soc va » hoc va, loc va, doc va
ca cua » co cua

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) or (thu sach)) ty tang mai khoi. ((hieu su) OR (tieu su)) cham soc va hanh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty tang mai khoi. ((hieu su) OR (tieu su)) cham soc va hanh ca cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ty tang mai khoi. ((hieu su) OR (tieu su)) cham soc va hanh ca cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ty tang mai khoi. ((hieu su) OR (tieu su)) cham soc va hanh ca cua triet*.