Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, chau tinh, kieu tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
nang cong » nang song, dang cong, bang cong
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong ban » cong bang, cong san, cong tan
ban tran » ban trang, tan tran, ban than
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) OR (lieu tinh)) - hanh ((trung va) or (trung ha)) nang cong ban tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (lieu tinh)) - hanh ((trung va) OR (trung ha)) nang cong ban tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu tinh) OR (lieu tinh)) - hanh ((trung va) or (trung ha)) nang cong ban tran cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) OR (lieu tinh)) - hanh ((trung va) or (trung ha)) nang cong ban tran cau*.