Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
di cau » da cau, diem cau
tu san » thu san, tu ban, tu can
ky dan » ky danh, ke dan
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ((ky dan) or (ky dang)) xa hoi. hieu ve cac xuc ((le thanh) or (va tinh)) di cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ((ky dan) OR (ky dang)) xa hoi. hieu ve cac xuc ((le thanh) OR (va tinh)) di cau tren.
• Adding a wildcard symbol may retrieve word variants: tu san ((ky dan) or (ky dang)) xa hoi. hieu ve cac xuc ((le thanh) or (va tinh)) di cau tren*.