Perhaps you should try some spelling variations:
hinh trinh » hanh trinh, dinh trinh, hinh tinh
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh vat » trinh van, trinh luat, sinh vat
tong tan » trong tan, cong tan, tong tap
toan cao » toan ban
toan tap » toan ban
vat han » vat phan, van han, vat ran

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sang)) - hinh trinh vat han tong tan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sang)) - hinh trinh vat han tong tan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - hinh trinh vat han tong tan ((toan cao) or (toan tap))*.