Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thong cong » trong cong, tong cong, thong thong
hoc thien » hoc hien, hoc thieu, hoc thiet
truong va » truong cao, truong dao, luong va
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

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 hach - thanh ((truong va) OR (truong dai)) thong cong dan chan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - thanh ((truong va) OR (truong dai)) thong cong dan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh ((truong va) OR (truong dai)) thong cong dan chan cao*.