Perhaps you should try some spelling variations:
thien van » thi van
nang mai » nang ma, nang tai, lang mai
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
doi cuu » doi cua, doi cuoc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
tuc va » truc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang mai hoi. ((thien van) or (hieu va)) nam ((tuc va) OR (thuc va)) hanh doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang mai hoi. ((thien van) OR (hieu va)) nam ((tuc va) OR (thuc va)) hanh doi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang mai hoi. ((thien van) or (hieu va)) nam ((tuc va) OR (thuc va)) hanh doi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang mai hoi. ((thien van) or (hieu va)) nam ((tuc va) OR (thuc va)) hanh doi cuu tre*.