Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong sang » thong mang, thong nang, thong san
hoc chieu » hoc thieu, ho chieu, hoc hien
sang toan » sang than, dang toan, quang toan
doanh ha » doanh khoa, doanh nhan, doanh hoan
doanh va » doan va, doanh tai, doanh cua
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 chieu tinh - nhung ((doanh ha) or (doanh va)) thong thong sang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - nhung ((doanh ha) OR (doanh va)) thong thong sang toan cao*.