Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
lang thanh » dang thanh, tang thanh, lang thang
hien danh » thien danh, hien hanh, hien khanh
tuong cua » truong cua, huong cua, thong cua
cong cong » cong dong, trong cong, dung cong
cong lang » cong vang, cong luong, cong quang
thanh lap » thanh san, phan lap, thanh hai
tung cua » trung cua, dung cua, tang 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 danh) or (hien nhanh)) - thanh ((tung cua) OR (tuong cua)) cong cong lang thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien danh) OR (hien nhanh)) - thanh ((tung cua) OR (tuong cua)) cong cong lang thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien danh) or (hien nhanh)) - thanh ((tung cua) OR (tuong cua)) cong cong lang thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (hien nhanh)) - thanh ((tung cua) OR (tuong cua)) cong cong lang thanh lap*.