Perhaps you should try some spelling variations:
dua tren » dung tren
van lanh » van anh, van hanh, van manh
nuoc van » nuoc va, nuoc san, luoc van
cap nuoc » dat nuoc
thu san » thuy san, thu ban, thuat san
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
phu san » phi san, thuy san
va cap » va cac, va dap, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu san) OR (phu san)) ky tang xa hoi. hieu va cap nuoc van lanh dao ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (phu san)) ky tang xa hoi. hieu va cap nuoc van lanh dao ((dua tren) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) OR (phu san)) ky tang xa hoi. hieu va cap nuoc van lanh dao ((dua tren) or (cuu tre))*".