Perhaps you should try some spelling variations:
thieu thanh » thien thanh, thi thanh, thu thanh
cua triet » cua viet, su triet, va triet
thanh ba » thanh bac, thanh bai, thanh ban
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
ba hoi » bia hoi, xa hoi, ba hoa
ve nam » he nam, va nam, le nam
va nay » va ngay, va cay

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 thieu thanh ba hoi. hieu ((ve nam) or (va nay)) thuc dan hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu thanh ba hoi. hieu ((ve nam) OR (va nay)) thuc dan hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach thieu thanh ba hoi. hieu ((ve nam) or (va nay)) thuc dan hanh dai cua triet*.