Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
ve pham » vi pham, v pham, ve phan
anh dat » thanh dat, lanh dao, dinh dat
anh dai » vanh dai, anh bai, anh tai
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach
cuu tre » cua 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 sach) or (te sach)) ky dang xa hoi. hieu ve pham duc van ((anh dai) OR (anh dat)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang xa hoi. hieu ve pham duc van ((anh dai) OR (anh dat)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky dang xa hoi. hieu ve pham duc van ((anh dai) OR (anh dat)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang xa hoi. hieu ve pham duc van ((anh dai) OR (anh dat)) cuu tre*.