Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham xuc » chat xuc, cham soc, pham duc
vinh cau » sinh cau, vinh cuu, minh cau
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa

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 ky nang ma hoi. hieu va ((cham xuc) or (cam xuc)) ((van ban) or (van thanh)) vinh cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu va ((cham xuc) OR (cam xuc)) ((van ban) OR (van thanh)) vinh cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu va ((cham xuc) or (cam xuc)) ((van ban) or (van thanh)) vinh cau tren*.