Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, bien viet
cau treo » cau theo, cau tren, cau triet
danh vai » danh sai, danh va, doanh van
viet cac » vien cac, viet ca, viet bac
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
vai cau » va cau, van cau, vai cac
tu sach » thu sach, te sach, tu cach
lo van » le van, vo van, do van
so van » su van, vo van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (su sach)) ky nang xa hoi. sieu viet cac ((lo van) or (so van)) danh vai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. sieu viet cac ((lo van) OR (so van)) danh vai cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. sieu viet cac ((lo van) or (so van)) danh vai cau treo*".