Perhaps you should try some spelling variations:
trong dan » trong dang, trong san, trong tan
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
hien anh » hien hanh, thien anh, tien anh
dien anh » tieng anh, dien dan
dinh cuu » dinh chi
dinh cua » sinh cua, dinh cu, tinh cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien anh) OR (dien anh)) - hanh ((dinh cuu) or (dinh cua)) dung trong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (dien anh)) - hanh ((dinh cuu) OR (dinh cua)) dung trong dan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (dien anh)) - hanh ((dinh cuu) or (dinh cua)) dung trong dan thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (dien anh)) - hanh ((dinh cuu) or (dinh cua)) dung trong dan thanh lap*.