Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
cham qua » pham quan, cham giua, cau qua
qua ban » cua ban, qua quan
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
ve cham » va cham, ve chat, vu cham
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ((ma hoi) or (xa hoi)). hieu ve cham qua ban ((thanh hai) or (thanh lap)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cham qua ban ((thanh hai) OR (thanh lap)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ((ma hoi) or (xa hoi)). hieu ve cham qua ban ((thanh hai) or (thanh lap)) cua triet*.