Perhaps you should try some spelling variations:
hieu thien » hieu hien, chieu chien, dieu khien
thien hach » thien thanh, hien hanh
trinh van » trinh han, trinh quan, trinh toan
van phan » van phong, van thanh, luan phan
phan tre » phan tien, nhan tren, pham tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
xuc va » tuc va, luc va, xac va
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu thien hach ((xuc va) OR (duc va)) trinh van phan tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu thien hach ((xuc va) OR (duc va)) trinh van phan tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu thien hach ((xuc va) OR (duc va)) trinh van phan tre*.