Perhaps you should try some spelling variations:
trien thuat » thien thuat, trien hoat, chien thuat
thien tinh » khien tinh, thien minh, tien tinh
tran thuat » trong thuat, tran tuan, tran thuy
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
tap quan » tac quan, hai quan

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 tinh - thanh ((tran thuat) or (trien thuat)) nhung cong ((tap doan) OR (tap quan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien tinh - thanh ((tran thuat) OR (trien thuat)) nhung cong ((tap doan) OR (tap quan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien tinh - thanh ((tran thuat) or (trien thuat)) nhung cong ((tap doan) OR (tap quan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thien tinh - thanh ((tran thuat) or (trien thuat)) nhung cong ((tap doan) OR (tap quan)) cau*.