Perhaps you should try some spelling variations:
luoc van » luoc can, luoc va, luc van
cua tre » cua te, cuu tre, cua triet
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
vu sach » vu bach, su sach, vu khach
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (vu sach)) ky dang ha noi. hieu ve cam ((duc van) or (luoc van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (vu sach)) ky dang ha noi. hieu ve cam ((duc van) OR (luoc van)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (vu sach)) ky dang ha noi. hieu ve cam ((duc van) or (luoc van)) hanh vi cua tre*.