Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
hanh than » hanh han, hanh nhan, hanh phan
trong san » trong cac, cong san, dong san
than cua » nhan cua, thai cua, ban cua
cua dung » cua dang, cua dong, qua dung
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 tinh - hanh than cua dung trong san ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh than cua dung trong san ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh than cua dung trong san ((toan cau) or (toan cao))*.