Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
thu sach » tu sach, thuat sach, thuoc sach
lang tai » lang thai, hang tai, tang tai
tai cua » thai cua, tai cuc, tri cua
thuc va » thuc vat, thuc dan, thuc day
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
tuc va » truc va, tuc xa, duc va
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: ((thu sach) or (su sach)) ky nang ma hoa. dieu hien dai ((tuc va) OR (thuc va)) lang tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky nang ma hoa. dieu hien dai ((tuc va) OR (thuc va)) lang tai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (su sach)) ky nang ma hoa. dieu hien dai ((tuc va) OR (thuc va)) lang tai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky nang ma hoa. dieu hien dai ((tuc va) OR (thuc va)) lang tai cua tu*.