Perhaps you should try some spelling variations:
thien van » thi van
hang hai » hoang hai, hang tai, thanh hai
hanh hai » thanh hai, nhanh hai, hanh tai
su sach » so sach, vu sach
hau loc » huu loc, phau hoc
van hau » van ha, van hai, van dau
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
loc va » hoc va, luc va

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 ty ((nang xa) or (nang cao)) hoi. thien van hau loc va ((hanh hai) or (hang hai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang cao)) hoi. thien van hau loc va ((hanh hai) OR (hang hai)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang cao)) hoi. thien van hau loc va ((hanh hai) or (hang hai)) cuu tre*.