Perhaps you should try some spelling variations:
thien nang » thien bang, thien dang, trien nang
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
trang va » hang va
tran van » luan van
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan 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 nang - thanh ((trang va) OR (tran van)) nhung cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien nang - thanh ((trang va) OR (tran van)) nhung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thien nang - thanh ((trang va) OR (tran van)) nhung cong dan toan tap*.