Perhaps you should try some spelling variations:
thien dang » thien bang, thien danh, thien nang
dung huong » dung thuong, dung phuong, dong huong
hien hanh » dieu hanh
hanh sinh » hanh dinh, hinh sinh, hanh chinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
huong ben » huong den, cuong bien, huong dan
cua dung » cua dang, cua dong, qua dung
ben than » benh than, ban than, nen than
than lap » thanh lap, phan lap, toan lap

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 hanh) or (thien dang)) - ((hanh sinh) or (hanh tinh)) cua dung huong ben than lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (thien dang)) - ((hanh sinh) OR (hanh tinh)) cua dung huong ben than lap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (thien dang)) - ((hanh sinh) or (hanh tinh)) cua dung huong ben than lap*.