Perhaps you should try some spelling variations:
cao hoat » cac hoat, co hoat, cao chat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
cua tec » cua tuc, cua toc, cua viec
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
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: tu sach ky nang cao hoat. hieu ve cam tuc va dan vi ((cua te) or (cua tec))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cao hoat. hieu ve cam tuc va dan vi ((cua te) OR (cua tec))*.