Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc tien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
truong bo » truong cao, truong dao
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cho » chat cho, han cho, chuan chon

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) OR (hoc thiet)) thanh - thanh ((truong bo) or (truong dai)) thong cong dan chan cho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc thiet)) thanh - thanh ((truong bo) OR (truong dai)) thong cong dan chan cho.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) OR (hoc thiet)) thanh - thanh ((truong bo) or (truong dai)) thong cong dan chan cho".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) OR (hoc thiet)) thanh - thanh ((truong bo) or (truong dai)) thong cong dan chan cho*.