Perhaps you should try some spelling variations:
tuan nhung » quan nhung, tuan hung, thuat nhung
phuong dan » phuong danh, phuong doan, huong dan
hoc thiet » hoc thieu, hoc thuyet, toc thieu
thanh tra » thanh toan, thanh hoa
tran hung » tran hong, tran quang, tran hoang
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) OR (hoc hien)) tach - thanh tra ((tuan nhung) or (tran hung)) phuong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc hien)) tach - thanh tra ((tuan nhung) OR (tran hung)) phuong dan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) OR (hoc hien)) tach - thanh tra ((tuan nhung) or (tran hung)) phuong dan thanh lap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) OR (hoc hien)) tach - thanh tra ((tuan nhung) or (tran hung)) phuong dan thanh lap*.