Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
chat cua » nhat cua, chat va, chat huu
thu sach » thuat sach, thuoc sach, thu hoach
sang tao » hang tai
tao khoi » tao hoi, thao khoa, lao khoa
tu sach » su sach, te sach, tu cach
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
ty sang » ty xang, ty hang, duy sang
cua tu » cua tuc, cua su, cua cu

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 sang tao khoi. hieu va chat cua ban thanh lap ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty sang tao khoi. hieu va chat cua ban thanh lap ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty sang tao khoi. hieu va chat cua ban thanh lap ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ty sang tao khoi. hieu va chat cua ban thanh lap ((cua tre) or (cua tu))*.