Perhaps you should try some spelling variations:
ky trang » ke trang, ky trong, ky nang
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
cuu tre » cua tre, cau tren, cau treo
cam cua » ca cua, nam cua, cau cua
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu van
hai cuu » hai cua, hai chu, hai cuc
hieu va » lieu va, hieu qua
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky trang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) cam cua ban hanh hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky trang) OR (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) cam cua ban hanh hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky trang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) cam cua ban hanh hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky trang) OR (ky tang)) xa hoi. ((hieu ve) or (hieu va)) cam cua ban hanh hai cuu tre*.