Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
dang hai » dang khai, hang hai, dung hai
nang ma » tang ma, sang ma, mang may
va dang » van dang, va nang, va lang
cua duc » cua tuc, cua nuoc, cua quoc
lanh y » anh y, hanh y, lanh lay
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat lanh y ((nang ma) OR (nang cao)) hoi. lieu va cac nuoc va dang hai ((cua te) or (cua duc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh y ((nang ma) OR (nang cao)) hoi. lieu va cac nuoc va dang hai ((cua te) OR (cua duc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh y ((nang ma) OR (nang cao)) hoi. lieu va cac nuoc va dang hai ((cua te) or (cua duc))".
• Adding a wildcard symbol may retrieve word variants: thuat lanh y ((nang ma) OR (nang cao)) hoi. lieu va cac nuoc va dang hai ((cua te) or (cua duc))*.