Perhaps you should try some spelling variations:
thieu tinh » chieu tinh, thien tinh, lieu tinh
lang trong » dung trong, cong trong, dong trong
nhung cong » dung cong, thong cong, hang cong
trong thi » trong thoi, trong thu, trong tho
thi nhung » thi nang, thi hong, thi huong
dan toan » van toan, dan than, manh toan
van tan » van tuan, van ban, van tai

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) or (trieu tinh)) - lang trong thi nhung cong ((dan toan) or (van tan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (trieu tinh)) - lang trong thi nhung cong ((dan toan) OR (van tan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (trieu tinh)) - lang trong thi nhung cong ((dan toan) or (van tan)) ban*.