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 tap » toan ban

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 tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - hanh ((truong cao) OR (trung tam)) thong cong manh toan tap*.