Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
bang huong » bang phuong, ban huong, bang suong
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
truong va » truong dai, truong cao, truong dao
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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