Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai
thanh lap » thanh san, phan lap, thanh hai
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau treo
tu sach » thu sach, su sach, te sach
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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

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