Perhaps you should try some spelling variations:
tai lang » thi lan, tai san, va lang
hieu thi » sieu thi, hieu chi, hiep thi
thi cham » thi hai, toc cham, thi ha
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
luc van » luoc van, luu van, duc van
vai cua » dai cua, hai cua, lai cua
vi cua » di cua

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 ((tai lang) or (tai cong)) xa hoi. hieu thi cham luc van hanh ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tai lang) OR (tai cong)) xa hoi. hieu thi cham luc van hanh ((vi cua) OR (vai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tai lang) or (tai cong)) xa hoi. hieu thi cham luc van hanh ((vi cua) or (vai cua)) tre*.