Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
hanh truong » hanh trong, anh truong, manh truong
trong thanh » truong thanh, trung thanh, thong thanh
rong thanh » dong thanh, cong thanh, truong thanh
hien manh » hien hanh, hieu manh, hien nhanh
tien manh » tien anh, tien thanh, tieng anh
quan dung » quang dung, quan duong, qua dung
thanh tap » thanh lap, thanh tai, thanh tay

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 manh) or (tien manh)) - hanh truong quan dung ((trong thanh) OR (rong thanh)) thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (tien manh)) - hanh truong quan dung ((trong thanh) OR (rong thanh)) thanh tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) or (tien manh)) - hanh truong quan dung ((trong thanh) OR (rong thanh)) thanh tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) or (tien manh)) - hanh truong quan dung ((trong thanh) OR (rong thanh)) thanh tap*.