Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
tinh dai » trinh dai, tinh da, tinh hai
lang xa » lang ha, dang xay, lang van
cac toc » cac toi, cac nuoc, cac thoi
ta tinh » tap tinh, tao tinh, tai tinh
cua tuc » cua duc, cua thuoc, luat tuc
y lang » o lang, _ lang, tay lang
toc ta » toc tay, toc thai
cua tu » cua su, cua cu, cua te

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)) y lang xa hoi. hieu vien cac toc ta tinh dai ((cua tu) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) y lang xa hoi. hieu vien cac toc ta tinh dai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) OR (thuat san)) y lang xa hoi. hieu vien cac toc ta tinh dai ((cua tu) or (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) OR (thuat san)) y lang xa hoi. hieu vien cac toc ta tinh dai ((cua tu) or (cua tuc))*.