Perhaps you should try some spelling variations:
phuong dinh » phuong binh, phuong linh, phuong trinh
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » hanh trinh, hanh trang, lanh tranh
toi phuong » thi phuong, tai phuong, doi phuong
hoc thieu » toc thieu, hoc hien
dinh toan » tinh toan, hinh toan, minh toan
toan cao » toan ban, toan tap
cua toi » cua hoi, cua moi, cua loai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh tranh) OR (canh tranh)) cua toi phuong dinh toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh tranh) or (canh tranh)) cua toi phuong dinh toan cao*.