Perhaps you should try some spelling variations:
trien thuat » thien thuat, trien hoat, chien thuat
tran thuat » trong thuat, tran tuan, tran thuy
nhung cong » dung cong, thong cong, hang cong
theo phap » thi phap
phap tinh » phap sinh, phap tieng, phap tang
cong bang » cuong bang, dong bang, hong bang
phan cau » phan dau, phan tu, phan lap
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: theo phap tinh - hanh ((tran thuat) or (trien thuat)) nhung cong bang ((phan cau) OR (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo phap tinh - hanh ((tran thuat) OR (trien thuat)) nhung cong bang ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo phap tinh - hanh ((tran thuat) or (trien thuat)) nhung cong bang ((phan cau) OR (phan cac))".
• Adding a wildcard symbol may retrieve word variants: theo phap tinh - hanh ((tran thuat) or (trien thuat)) nhung cong bang ((phan cau) OR (phan cac))*.