Perhaps you should try some spelling variations:
tuan khai » than khai, quang khai, tuong khai
van tuan » van quan, van ban, anh tuan
duc van » duc va, duc tan, duc manh
cua tre » cua te, cua triet, dua tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
cuu tre » cau tren, cau treo

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

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