Perhaps you should try some spelling variations:
quan dung » quang dung, quan duong, quan dong
trong san » trong cac, cong san, dong san
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
chu nang » chuc nang, chua nang, chu bang
cuu nang » chuc nang, cam nang, cuu van
qua dung » quang dung, su dung, qua song

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu nang) or (cuu nang)) - thanh cong ((quan dung) OR (qua dung)) trong san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu nang) OR (cuu nang)) - thanh cong ((quan dung) OR (qua dung)) trong san thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu nang) or (cuu nang)) - thanh cong ((quan dung) OR (qua dung)) trong san thanh cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu nang) or (cuu nang)) - thanh cong ((quan dung) OR (qua dung)) trong san thanh cau*.