Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
quan nhung » cua nhung, luan chung, quang hung
hieu lang » chieu sang, nhieu tang, hieu van
hanh nang » anh nang, ganh nang, hanh mang
qua nhung » cua nhung, qua chung, chua nhung
tuong van » truong van, trong van, duong van
van toan » van tuan, van tan, van thanh
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (hieu quang)) - hanh nang ((quan nhung) OR (qua nhung)) tuong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (hieu quang)) - hanh nang ((quan nhung) OR (qua nhung)) tuong van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) or (hieu quang)) - hanh nang ((quan nhung) OR (qua nhung)) tuong van toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (hieu quang)) - hanh nang ((quan nhung) OR (qua nhung)) tuong van toan ban*.