Perhaps you should try some spelling variations:
trinh cham » trinh chat, trinh chao, trinh han
hoc thieu » toc thieu, hoc hien
trinh tam » trinh tai, trinh toan, trinh tu
doc hieu » toc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) tinh - hanh ((trinh tam) OR (trinh cham)) trong cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) tinh - hanh ((trinh tam) OR (trinh cham)) trong cong dan phan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc thieu)) tinh - hanh ((trinh tam) OR (trinh cham)) trong cong dan phan cau*".