Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong tap » cuong tap, cong tac, cong tan
quan tap » quan lap, quan tam, quan tay
quan tai » quan tri, quang tri, quan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu tinh - hanh ((trung cua) or (trung cap)) thong cong tap ((quan tap) OR (quan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((trung cua) OR (trung cap)) thong cong tap ((quan tap) OR (quan tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh ((trung cua) or (trung cap)) thong cong tap ((quan tap) OR (quan tai))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((trung cua) or (trung cap)) thong cong tap ((quan tap) OR (quan tai))*.