Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hung cuong » hung vuong, hong cuong, hung luong
hoc thieu » toc thieu, hoc hien
trinh thi » trinh tai, dinh thi, trinh tu
hung cong » nhung cong, phung cong, dung cong
toan cao » toan ban
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 xanh - hanh trinh thi ((hung cong) or (hung cuong)) dan ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh thi ((hung cong) OR (hung cuong)) dan ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh thi ((hung cong) or (hung cuong)) dan ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh thi ((hung cong) or (hung cuong)) dan ((toan cao) OR (toan tap))*.