Perhaps you should try some spelling variations:
thien chien » thien nhien
chien quang » dien quang, thien quan, trien quang
thong cong » trong cong, tong cong, thong thong
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
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: thien chien quang - hanh ((trinh va) OR (trinh vat)) thong cong tan ((than cap) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien chien quang - hanh ((trinh va) OR (trinh vat)) thong cong tan ((than cap) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thien chien quang - hanh ((trinh va) OR (trinh vat)) thong cong tan ((than cap) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: thien chien quang - hanh ((trinh va) OR (trinh vat)) thong cong tan ((than cap) or (phan cac))*.