Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tranh va » tranh van, trang va, trinh va
toan cau » 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 chieu tinh - hanh ((tranh va) or (trinh vat)) nhung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((tranh va) OR (trinh vat)) nhung cong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((tranh va) or (trinh vat)) nhung cong manh toan cau*.