Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
tac chay » tac cay, tac chuan, toan chay
chay cao » cay cao, chat cao, nha cao

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 ((trang cua) OR (trung cua)) ((dung cong) or (dung trong)) tac chay cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((trang cua) OR (trung cua)) ((dung cong) OR (dung trong)) tac chay cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh ((trang cua) OR (trung cua)) ((dung cong) or (dung trong)) tac chay cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((trang cua) OR (trung cua)) ((dung cong) or (dung trong)) tac chay cao*.