Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
hoc chieu » hoc thieu, hoc hien, hoc dieu
cac thong » cac tuong, tac thong, cac truong
cac phong » cac phuong, cac chuong, chau phong
dong nang » dong bang, dung nang, dong yang
nang phan » nang phat, nang thanh, nang quan
ho chieu » theo chieu, hoc thieu, mot chieu
phan cac » nhan cach, phan dau, phan 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 chieu) OR (ho chieu)) tinh - thanh thong ((cac thong) or (cac phong)) dong nang phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) tinh - thanh thong ((cac thong) OR (cac phong)) dong nang phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (ho chieu)) tinh - thanh thong ((cac thong) or (cac phong)) dong nang phan cac".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (ho chieu)) tinh - thanh thong ((cac thong) or (cac phong)) dong nang phan cac*.