Perhaps you should try some spelling variations:
giay thanh » gia thanh, gian thanh
thanh loi » thanh hoa, thanh hai, thanh lap
dua tren » dung tren
te sach » toc sach
cham so » cham soc, cham o, ham so
so giay » so giai, so giao, so gia
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
tai hoi » tai khoi, dai hoi, tai hai
ty nang » ky nang, ty hang, ly nang
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) OR (ty xang)) tai hoi. hieu ve cham so giay thanh loi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ty xang)) tai hoi. hieu ve cham so giay thanh loi ((dua tren) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ty xang)) tai hoi. hieu ve cham so giay thanh loi ((dua tren) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) OR (ty xang)) tai hoi. hieu ve cham so giay thanh loi ((dua tren) or (cuu tre))*.