Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
truong cao » truong dai
thong cong » trong cong, tong cong, thong thong
hoc khien » hoc hien, hoc nghien, hoc thieu
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien tinh - hanh ((truong cao) OR (trung tam)) thong cong manh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien tinh - hanh ((truong cao) OR (trung tam)) thong cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - hanh ((truong cao) OR (trung tam)) thong cong manh toan cao*.