Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
dang thai » dang thi, dang hai, dang khai
cao nuoc » cap nuoc, cac nuoc, cao ngoc
nang xa » nang x, lang xa, nang ma
va dang » van dang, va nang, va lang
va cao » va cac, va co, va dao
cua tu » cua tuc, cua su, cua cu

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

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