Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
giua ban » giup ban, dia ban, cua ban
doc sach » hoc sach, toc sach, nuoc sach
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y nang ma hoa. hieu ((ve cham) OR (vu cham)) giua ban ((thanh hai) or (thanh lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang ma hoa. hieu ((ve cham) OR (vu cham)) giua ban ((thanh hai) OR (thanh lap)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach y nang ma hoa. hieu ((ve cham) OR (vu cham)) giua ban ((thanh hai) or (thanh lap)) cua tre".
• Adding a wildcard symbol may retrieve word variants: doc sach y nang ma hoa. hieu ((ve cham) OR (vu cham)) giua ban ((thanh hai) or (thanh lap)) cua tre*.