Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh lai » thanh lap, thanh loi, thanh tai
dua tren » dung tren
nang dai » nang dau, nang tai, lang dai
cham duc » pham duc, cham soc, pham duy
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo

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 ty nang dai hoi. hieu ve cham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang dai hoi. hieu ve cham duc va ((thanh lai) OR (thanh hai)) ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang dai hoi. hieu ve cham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang dai hoi. hieu ve cham duc va ((thanh lai) OR (thanh hai)) ((dua tren) or (cuu tre))*.