Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
tinh bai » tinh bac, tinh hai, hinh bai
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
can cau » van cau, ban cau, ca cau

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 - canh ((tinh bai) or (trinh han)) thong cong dan ((phan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - canh ((tinh bai) OR (trinh han)) thong cong dan ((phan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - canh ((tinh bai) or (trinh han)) thong cong dan ((phan cau) or (can cau))*.