Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
hanh hai » thanh hai, nhanh hai, hang hai
thu sac » thu sach, thu san, thu xac
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky ((nang xa) OR (nang ma)) hoi. hieu va cac lo va ((hanh hai) or (hang tai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((nang xa) OR (nang ma)) hoi. hieu va cac lo va ((hanh hai) OR (hang tai)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky ((nang xa) OR (nang ma)) hoi. hieu va cac lo va ((hanh hai) or (hang tai)) cuu tre*".