Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trung nam » trung tam, trong nam, trung ha
trung cap » truong cao, trung tam
doc hieu » toc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cac » nhan cach, phan dau, phan lap

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) or (doc hieu)) xanh - thanh ((trung nam) OR (trung cap)) thong cong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) xanh - thanh ((trung nam) OR (trung cap)) thong cong dan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doc hieu)) xanh - thanh ((trung nam) OR (trung cap)) thong cong dan phan cac".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) xanh - thanh ((trung nam) OR (trung cap)) thong cong dan phan cac*.