Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
chau tre » chay tren, chau tho, cho tre
van chat » cao chat
lap chau » lai chau, a chau, ha chau
quoc ban » quoc bao, quoc lan, quoc quan
tu sach » thu sach, te sach, tu cach
van cam » van nam, van lam, van cau
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
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) OR (su sach)) y nang x hoi. hieu ((van cam) or (van chat)) quoc ban thanh lap chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang x hoi. hieu ((van cam) OR (van chat)) quoc ban thanh lap chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y nang x hoi. hieu ((van cam) or (van chat)) quoc ban thanh lap chau tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y nang x hoi. hieu ((van cam) or (van chat)) quoc ban thanh lap chau tre*.