Perhaps you should try some spelling variations:
thieu hanh » thien thanh, thien chanh, thieu khang
hoc thieu » toc thieu, hoc hien
tranh cuu » tranh cua, trinh cuu, tranh chua
nang cong » nang song, dang cong, hang cong
bang cong » dang cong, bang song, hang cong
doan cau » toan cau, doan dau, doan cap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu hanh - canh tranh cuu ((nang cong) or (bang cong)) tap ((doan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hanh - canh tranh cuu ((nang cong) OR (bang cong)) tap ((doan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu hanh - canh tranh cuu ((nang cong) or (bang cong)) tap ((doan cau) or (toan tap))*.