Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
bach xuc » bach tuoc, bach xuan, bach hue
tu sach » thu sach, su sach, te sach
va tinh » may tinh
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang ma hoi. hieu vien bach xuc ((va tinh) or (gia thanh)) va ((cua te) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu vien bach xuc ((va tinh) OR (gia thanh)) va ((cua te) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu vien bach xuc ((va tinh) or (gia thanh)) va ((cua te) or (cuu tre))*.