Perhaps you should try some spelling variations:
sach tham » sach nha
sach tac » sach bac, sach tai, sach truc
tinh hai » tinh thai, tinh chat, trinh han
manh hai » lanh hai, minh hai, thanh hai
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
quan ha » quan he
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
ha hoi » hoa hoi, ha noi, xa hoi

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 tac) or (sach tham)) quan ha hoi. hieu ve cam xuc va ((manh hai) or (tinh hai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tac) OR (sach tham)) quan ha hoi. hieu ve cam xuc va ((manh hai) OR (tinh hai)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tac) or (sach tham)) quan ha hoi. hieu ve cam xuc va ((manh hai) or (tinh hai)) cuu tre*.