Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
chieu tinh » trieu tinh, lieu tinh, chau tinh
trinh chua » trinh cua, trinh chu, tinh chua
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
than ban » thanh ban, than man, nhuan ban
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - hanh ((trinh chua) OR (trinh chuan)) dong cong dan ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh ((trinh chua) OR (trinh chuan)) dong cong dan ((than ban) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - hanh ((trinh chua) OR (trinh chuan)) dong cong dan ((than ban) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh ((trinh chua) OR (trinh chuan)) dong cong dan ((than ban) or (toan ban))*.