Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
hanh lam » hanh kem, dinh lam
cham duc » pham duc, cham soc, pham duy
tang mai » tang ma, tang tai, lang mai
hanh va » hang va, hanh vi
su sach » so sach, vu sach
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
y tang » ky tang, 6 tang, 7 tang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y tang mai hoi. hieu vu cham duc va ((((hanh lam) OR (thanh lap))) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y tang mai hoi. hieu vu cham duc va ((((hanh lam) OR (thanh lap))) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y tang mai hoi. hieu vu cham duc va ((((hanh lam) OR (thanh lap))) or (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y tang mai hoi. hieu vu cham duc va ((((hanh lam) OR (thanh lap))) or (hanh va)) cua tre*.