Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thieu sang » chieu sang, thieu khang, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
trung luan » truong luan, trung tuan, trung quan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
khang ban » khang benh, khang chan, quang ban
cong van » cong vang, cong san, song van
hang ban » hang luan, hang va, hang tai

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 sang) or (thieu quang)) - hanh trung luan chung cong van ((khang ban) OR (hang ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - hanh trung luan chung cong van ((khang ban) OR (hang ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (thieu quang)) - hanh trung luan chung cong van ((khang ban) OR (hang ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu quang)) - hanh trung luan chung cong van ((khang ban) OR (hang ban))*.