Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
cau tren » cu tren, dau tren, ca tren
thu sach » thuat sach, thuoc sach, thu hoach
xa thanh » va thanh, ha thanh, ta thanh
cac tuc » cac toc, cac tu, cac tac
cua tre » cua te, cuu tre, cua triet
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
ve cac » va cac, vien cac

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) or (thu sach)) tu nang xa hoi. hieu ve cac tuc xa thanh hai ((cua tre) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) tu nang xa hoi. hieu ve cac tuc xa thanh hai ((cua tre) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) tu nang xa hoi. hieu ve cac tuc xa thanh hai ((cua tre) or (cau tren))*.