Perhaps you should try some spelling variations:
thieu quang » hieu quang, trien quang, hieu quan
thien quan » trien quang, lien quan, thien van
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
chua nang » chuc nang, chua xang, kha nang
nang cong » nang song, dang cong, bang cong
cong dan » cong san, cong tan, huong dan
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: hoc ((thieu quang) or (thien quan)) - hanh trinh chua nang cong dan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (thien quan)) - hanh trinh chua nang cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) or (thien quan)) - hanh trinh chua nang cong dan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) or (thien quan)) - hanh trinh chua nang cong dan ((toan tap) OR (toan ban))*.