Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
van thanh » ban thanh, van tuan
thanh li » thanh loi, thanh le, nhanh li
chat xuc » chat huu, chao xu, chat cua
hoc viet » hoc hien
nang tai » hang tai, tang tai, sang tai
lang dai » lang hai, lang mai, lang chai
tu sach » thu sach, su sach, te sach

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 y ((nang tai) or (lang dai)) hoi. hieu hien ((chat xuc) or (cam xuc)) van thanh li hoc viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang tai) OR (lang dai)) hoi. hieu hien ((chat xuc) OR (cam xuc)) van thanh li hoc viet.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang tai) or (lang dai)) hoi. hieu hien ((chat xuc) or (cam xuc)) van thanh li hoc viet*.