Perhaps you should try some spelling variations:
thu sai » thu hai, thu san, thu ai
thu tai » tu tai, tru tai, thu hai
cao hoi » cau hoi, co hoi, cao hoc
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
cham lo » cham o, cam lo, cham soc
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tri cua, dai cua
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sai) OR (thu tai)) ky nang cao hoi. hieu vu cham lo va hanh ((tai cua) or (tai cuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sai) OR (thu tai)) ky nang cao hoi. hieu vu cham lo va hanh ((tai cua) OR (tai cuc)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sai) OR (thu tai)) ky nang cao hoi. hieu vu cham lo va hanh ((tai cua) or (tai cuc)) te*".