Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
tuan bang » tuan dang, tuan hoang, thuat bang
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: ((doi chieu) or (hoc thieu)) tinh - hanh trung tuan bang phuong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) tinh - hanh trung tuan bang phuong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) tinh - hanh trung tuan bang phuong tinh toan cau*.