Perhaps you should try some spelling variations:
thanh trinh » hanh trinh, thanh tinh, thanh binh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
trinh vap » trinh van, trinh vat, trinh va
vap nhung » va nhung, ve nhung, voi nhung
hoa dau » hoa dai, hoa dam, hoa cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trinh vap nhung cong thanh ((hoa dau) or (hoa dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trinh vap nhung cong thanh ((hoa dau) OR (hoa dan))*.