Perhaps you should try some spelling variations:
van lanh » van anh, van manh, van canh
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky danh » ky anh, ky dang
danh xa » danh ca, dinh xa, canh xa
qua cam » qua cham, qua cac, qua ca
cua tre » cua te, cuu tre, cua triet

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 ky danh xa hoi. hieu qua cam xuc ((van lanh) or (van hanh)) dao ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky danh xa hoi. hieu qua cam xuc ((van lanh) OR (van hanh)) dao ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky danh xa hoi. hieu qua cam xuc ((van lanh) or (van hanh)) dao ((cua tre) or (cau tren))*.