Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
chieu tinh » trieu tinh, lieu tinh, kieu tinh
truong cua » truong ca, truong quan, huong cua
truong cao » truong dai
thong vang » thong van, thong mang, thong vung
chau tinh » cuu tinh, ha tinh, cua tinh
vang toan » van toan, dang toan, quang toan
toan cau » 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) or (chau tinh)) - hanh ((truong cua) OR (truong cao)) khong thong vang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chau tinh)) - hanh ((truong cua) OR (truong cao)) khong thong vang toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chau tinh)) - hanh ((truong cua) OR (truong cao)) khong thong vang toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chau tinh)) - hanh ((truong cua) OR (truong cao)) khong thong vang toan cau*.