Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
day thanh » dao thanh, dat thanh, da thanh
su triet » su viet, su tien, ve triet
thuc day » thuc dan, thuc vat
phan su » phan suc, phan tu, nhan su
hieu va » lieu va, hieu qua
su sach » so sach
hoa hoi » khoa hoi, hoa doi, hoc hoi
ky tang » ky nang, ky dang, kho tang
vu sach » vu bach, vu khach
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky tang ((hoa hoi) OR (hoa hoc)). hieu va am thuc day thanh phan su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky tang ((hoa hoi) OR (hoa hoc)). hieu va am thuc day thanh phan su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky tang ((hoa hoi) OR (hoa hoc)). hieu va am thuc day thanh phan su triet*".