Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
manh hai » lanh hai, minh hai, thanh hai
van manh » van minh, van anh, van hanh
tu cach » tu cac
hai cua » thai cua, dai cua, hoi cua
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky dang xa hoi. ((hieu ve) or (hieu van)) cam duc van manh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky dang xa hoi. ((hieu ve) OR (hieu van)) cam duc van manh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky dang xa hoi. ((hieu ve) or (hieu van)) cam duc van manh hai cua tre*.