Perhaps you should try some spelling variations:
thu lang » thu bang, phu lang, tho lang
thu hang » thi hang, thuc hanh, thu huong
te sach » toc sach
hanh di » hanh de, hang di, danh di
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cua tre, cau tren, cau treo

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 ((thu lang) OR (thu hang)) xa hoi. hieu va cac xuc van ((hanh di) or (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu lang) OR (thu hang)) xa hoi. hieu va cac xuc van ((hanh di) OR (hanh vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu lang) OR (thu hang)) xa hoi. hieu va cac xuc van ((hanh di) or (hanh vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((thu lang) OR (thu hang)) xa hoi. hieu va cac xuc van ((hanh di) or (hanh vi)) cuu tre*.