Perhaps you should try some spelling variations:
phat thanh » pham thanh, phan thanh, phat hanh
phat hang » pham hang, phat hanh, pham thang
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
thuc van » thuc vat, thuc dan, thuc va
van danh » van doanh, van anh, van hanh
tu sach » thu sach, su sach, te sach
danh tu » anh tu, hanh tu, doanh thu
van am » van nam, van lam, van dam
tu cua » hu cua, vu 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 ((phat hang) OR (phat thanh)) xa hoi. hieu van am thuc van danh tu cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((phat hang) OR (phat thanh)) xa hoi. hieu van am thuc van danh tu cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((phat hang) OR (phat thanh)) xa hoi. hieu van am thuc van danh tu cua triet*.