Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
chinh cua » chinh ca, chinh sua, hinh cua
bang song » nang song
manh toan » thanh toan, anh tuan, tinh toan
cua bang » chua bang, cua ban, cua dang
dan than » dan chan, ban than, van than

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