Perhaps you should try some spelling variations:
hoc thiet » hoc thieu, hoc thuyet, toc thieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
tinh cua » trinh cua, sinh cua, tinh chat
sat phan » sat nhan, vat phan, xuat phan
phan cap » phan lap, phan tap, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc hien)) anh - hanh tinh cua ((hang cong) or (dung cong)) sat phan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) anh - hanh tinh cua ((hang cong) OR (dung cong)) sat phan cap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc hien)) anh - hanh tinh cua ((hang cong) or (dung cong)) sat phan cap*.