Perhaps you should try some spelling variations:
chieu tinh » lieu tinh, chau tinh, kieu tinh
nang luong » nang song
tranh cua » manh cua
doanh cua » doanh luan
luong van » luong va, duong van, luong vat
van quan » van ban
quan cau » quang cao, toan cau, quan ha

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) OR (trieu tinh)) - hanh ((tranh cua) or (doanh cua)) nang luong van quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (trieu tinh)) - hanh ((tranh cua) OR (doanh cua)) nang luong van quan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) OR (trieu tinh)) - hanh ((tranh cua) or (doanh cua)) nang luong van quan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) OR (trieu tinh)) - hanh ((tranh cua) or (doanh cua)) nang luong van quan cau*.