Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
vat nhung » va nhung, vap nhung, vai nhung
cong van » cong vang, cong san, song van
thai cao » thoai cac, thuat cao, toan cao
tai cao » tao cao, tai sao, tai cac

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) or (canh tranh)) vat nhung cong van ((tai cao) OR (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh trinh) OR (canh tranh)) vat nhung cong van ((tai cao) OR (thai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh trinh) or (canh tranh)) vat nhung cong van ((tai cao) OR (thai cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trinh) or (canh tranh)) vat nhung cong van ((tai cao) OR (thai cao))*.