Perhaps you should try some spelling variations:
hoc trieu » hoc thieu, hoc tieu, hoc dieu
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
trinh va » trinh van, trinh ve, trinh vi
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: hoc trieu tinh - hanh ((trinh va) OR (trinh vat)) dung cong dan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trieu tinh - hanh ((trinh va) OR (trinh vat)) dung cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hanh ((trinh va) OR (trinh vat)) dung cong dan phan cau*.