Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
cong luong » cong thuong, nang luong, cong dong
hoc thien » hoc hien, hoc thieu, hoc thiet
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien danh - ((thanh trung) OR (thanh tung)) va nhung cong luong ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - ((thanh trung) OR (thanh tung)) va nhung cong luong ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien danh - ((thanh trung) OR (thanh tung)) va nhung cong luong ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thien danh - ((thanh trung) OR (thanh tung)) va nhung cong luong ((toan cao) or (toan ban))*.