Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
nang nang » nang sang, nang hang, chang nang
nang quan » ban quan, nang suat
quan dung » quang dung, quan duong, qua dung
trong dan » trong dang, trong san, trong tan
than cau » toan cau, phan cau, than cap
phan cac » nhan cach, phan dau, phan lap

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 - nang nang quan dung trong dan ((than cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - nang nang quan dung trong dan ((than cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - nang nang quan dung trong dan ((than cau) or (phan cac))*.